harvest_recently_digitised_files.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Harvest recently digitised files from RecordSearch\n",
    "\n",
    "This notebook scrapes data from the 'Newly scanned records' section of [RecordSearch](https://recordsearch.naa.gov.au/), creating a list of recently digitised files. I ran this code on 27 March 2021 to generate [a dataset](data/recently-digitised-20210327.csv) containing files that had been digitised in the previous month.\n",
    "\n",
    "The 'Newly scanned records' only display a month's worth of additions. However, I've modified the code below to create a 'git scraper' that uses GitHub actions to run the harvester every Sunday, saving a list of the files digitised in the previous week into a [public repository](https://github.com/wragge/naa-recently-digitised). Over time, this should build up a more complete record of the digitisation process.\n",
    "\n",
    "It took me a while to figure out how the pagination worked in the 'Newly scanned records' site. As you can see below, it's a matter of adding inputs to the main navigation form that mimic a click on the page navigation buttons. Screen scraping is such fun... 😬"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Import what we need"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import re\n",
    "import time\n",
    "from pathlib import Path\n",
    "\n",
    "import altair as alt\n",
    "import arrow\n",
    "import mechanicalsoup\n",
    "import pandas as pd\n",
    "from recordsearch_data_scraper.scrapers import RSSeries\n",
    "from tqdm.auto import tqdm"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Define some functions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "def initialise_browser():\n",
    "    \"\"\"\n",
    "    This is necessary to get an active session in RS.\n",
    "    \"\"\"\n",
    "    browser = mechanicalsoup.StatefulBrowser()\n",
    "    browser.open(\"https://recordsearch.naa.gov.au/scripts/Logon.asp?N=guest\")\n",
    "    # As of Jan 2023 these lines don't seem necessary and cause a LinkNotFound error\n",
    "    # browser.select_form('form[id=\"t\"]')\n",
    "    # browser.submit_selected()\n",
    "    return browser\n",
    "\n",
    "\n",
    "def get_date_digitised(result):\n",
    "    \"\"\"\n",
    "    Generate a formatted date from the date digitised string (eg 'Digitised 1 days ago').\n",
    "    It does this by getting today's date then subtracting the interval.\n",
    "    It's possible this might not always be accurate...\n",
    "    \"\"\"\n",
    "    # Get the string describing when the record was digitised\n",
    "    when_digitised = result.find(\n",
    "        \"div\", class_=\"card-footer card-footer-list\"\n",
    "    ).span.string.strip()\n",
    "\n",
    "    # Extract out the time interval and unit\n",
    "    interval, unit = re.search(\n",
    "        r\"^Digitised (\\d+) (minutes|hours|days) ago\", when_digitised\n",
    "    ).groups()\n",
    "\n",
    "    # Subtract interval from today's date\n",
    "    if unit == \"minutes\":\n",
    "        date_digitised = arrow.now(\"Australia/Sydney\").shift(minutes=-(int(interval)))\n",
    "    elif unit == \"days\":\n",
    "        date_digitised = arrow.now(\"Australia/Sydney\").shift(days=-(int(interval)))\n",
    "    elif unit == \"hours\":\n",
    "        date_digitised = arrow.now(\"Australia/Sydney\").shift(hours=-(int(interval)))\n",
    "\n",
    "    # ISO format the result\n",
    "    return date_digitised.format(\"YYYY-MM-DD\")\n",
    "\n",
    "\n",
    "def get_records_from_page(page, pbar):\n",
    "    \"\"\"\n",
    "    Scrapes item metadata from the list of results.\n",
    "    \"\"\"\n",
    "    records = []\n",
    "\n",
    "    # Get the list of results\n",
    "    results = page.find_all(\"li\", class_=\"soda_list\")\n",
    "\n",
    "    # Loop through the results, extracting the metadata\n",
    "    for result in results:\n",
    "        record = {}\n",
    "        record[\"title\"] = result.img[\"title\"]\n",
    "        record[\"item_id\"] = (\n",
    "            result.find(\"dt\", string=\"Item ID:\")\n",
    "            .find_next_sibling(\"dd\")\n",
    "            .a.string.strip()\n",
    "        )\n",
    "        record[\"series\"] = (\n",
    "            result.find(\"dt\", string=\"Series:\").find_next_sibling(\"dd\").a.string.strip()\n",
    "        )\n",
    "        record[\"control_symbol\"] = (\n",
    "            result.find(\"dt\", string=re.compile(\"Control symbol:\"))\n",
    "            .find_next_sibling(\"dd\")\n",
    "            .string.strip()\n",
    "        )\n",
    "        record[\"date_range\"] = re.sub(\n",
    "            r\"\\s+\",\n",
    "            \" \",\n",
    "            result.find(\"dt\", string=re.compile(\"Date range:\"))\n",
    "            .find_next_sibling(\"dd\")\n",
    "            .string.strip(),\n",
    "        )\n",
    "        record[\"date_digitised\"] = get_date_digitised(result)\n",
    "        records.append(record)\n",
    "    pbar.update(len(records))\n",
    "    return records\n",
    "\n",
    "\n",
    "def get_number_of_results(page):\n",
    "    \"\"\"\n",
    "    Get the start, end, and total number of results from the current page of results.\n",
    "    \"\"\"\n",
    "    result_summary = page.find(\n",
    "        \"label\", id=\"ContentPlaceHolderSNR_lblTopPaging\"\n",
    "    ).string.strip()\n",
    "    start, end, total = re.search(r\"(\\d+) to (\\d+) of (\\d+)\", result_summary).groups()\n",
    "    return (start, end, total)\n",
    "\n",
    "\n",
    "def harvest_recently_digitised():\n",
    "    records = []\n",
    "\n",
    "    # Get a browser with all RecordSearch's session stuff ready\n",
    "    browser = initialise_browser()\n",
    "\n",
    "    # Open the recently digitised page\n",
    "    browser.open(\n",
    "        \"https://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ListingReports/NewlyScannedList.aspx\"\n",
    "    )\n",
    "\n",
    "    # CONFIGURE THE RESULTS FORM\n",
    "    browser.select_form('form[id=\"formSNRMaster\"]')\n",
    "\n",
    "    # Get 200 results per page\n",
    "    browser[\"ctl00$ContentPlaceHolderSNR$ddlResultsPerPage\"] = \"200\"\n",
    "\n",
    "    # Get results from the past month. Other options are 'w' (week) and 'f' (fortnight).\n",
    "    browser[\"ctl00$ContentPlaceHolderSNR$ddlDateAdded\"] = \"m\"\n",
    "\n",
    "    # Set display to list view\n",
    "    # Setting these mimics a click on the List View button\n",
    "    browser.form.set(\"ctl00$ContentPlaceHolderSNR$btn_viewList.x\", \"11\", force=True)\n",
    "    browser.form.set(\"ctl00$ContentPlaceHolderSNR$btn_viewList.y\", \"9\", force=True)\n",
    "    browser.submit_selected()\n",
    "\n",
    "    # PROCESS RESULTS\n",
    "    # Get the total number of results\n",
    "    start, end, total = get_number_of_results(browser.page)\n",
    "\n",
    "    with tqdm(total=int(total)) as pbar:\n",
    "\n",
    "        # Process first page of results\n",
    "        records += get_records_from_page(browser.page, pbar)\n",
    "\n",
    "        # Loop through the rest of the results set\n",
    "        while end != total:\n",
    "            browser.select_form('form[id=\"formSNRMaster\"]')\n",
    "\n",
    "            # Setting these and submitting the form retrieves th next page of results\n",
    "            # Basically they mimic a click on the page navigation buttons\n",
    "            browser.form.set(\n",
    "                \"ctl00$ContentPlaceHolderSNR$listPagerTop$ctl00$ctl02.x\",\n",
    "                \"10\",\n",
    "                force=True,\n",
    "            )\n",
    "            browser.form.set(\n",
    "                \"ctl00$ContentPlaceHolderSNR$listPagerTop$ctl00$ctl02.y\",\n",
    "                \"10\",\n",
    "                force=True,\n",
    "            )\n",
    "            browser.submit_selected()\n",
    "\n",
    "            start, end, total = get_number_of_results(browser.page)\n",
    "            records += get_records_from_page(browser.page, pbar)\n",
    "            time.sleep(1)\n",
    "    return records"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Run the harvest"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "nbval-skip"
    ]
   },
   "outputs": [],
   "source": [
    "records = harvest_recently_digitised()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Convert the results to a DataFrame"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "nbval-skip"
    ]
   },
   "outputs": [],
   "source": [
    "df_records = pd.DataFrame(records)\n",
    "df_records.head()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Find titles of series listed in the dataset\n",
    "\n",
    "The dataset only includes the series identifiers. To make it a bit more useful, we can retrieve the title of each series and add this to the dataset.\n",
    "\n",
    "First we extract a list of unique series identifiers from the dataset, then loop through it, grabbing the series details using my RecordSearch tools library."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "nbval-skip"
    ]
   },
   "outputs": [],
   "source": [
    "series_titles = []\n",
    "\n",
    "# Loop through the list of series ids\n",
    "for s in tqdm(list(df_records[\"series\"].unique())):\n",
    "\n",
    "    # Get the summary details from each series\n",
    "    # Note that this includes more information than the title which could be added into the dataset if you wanted (eg location)\n",
    "    details = RSSeries(\n",
    "        s, include_number_digitised=False, include_access_status=False\n",
    "    ).data\n",
    "\n",
    "    # Add the titles and ids to a new list\n",
    "    try:\n",
    "        series_titles.append({\"series\": s, \"series_title\": details[\"title\"]})\n",
    "    except KeyError:\n",
    "        print(details)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Then we can convert the series titles into a dataframe and merge it with the records dataframe to create a new dataframe that includes the titles."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "nbval-skip"
    ]
   },
   "outputs": [],
   "source": [
    "df_series = pd.DataFrame(series_titles)\n",
    "\n",
    "# Merge the dataframes on the `series` column\n",
    "df = df_records.merge(df_series, on=\"series\")\n",
    "df.head()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Save the results to a CSV file"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "tags": [
     "nbval-skip"
    ]
   },
   "outputs": [],
   "source": [
    "df.to_csv(\n",
    "    Path(\"data\", f'recently-digitised-{arrow.now().format(\"YYYYMMDD\")}.csv'),\n",
    "    index=False,\n",
    ")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Which series do the digitised files come from?\n",
    "\n",
    "Let's get a list of the series that appear most often in the dataset."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Reload previously harvested file if necessary\n",
    "df = pd.read_csv(\"data/recently-digitised-20210327.csv\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>series</th>\n",
       "      <th>series_title</th>\n",
       "      <th>count</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>B884</td>\n",
       "      <td>Citizen Military Forces Personnel Dossiers, 19...</td>\n",
       "      <td>20382</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>A9301</td>\n",
       "      <td>RAAF Personnel files of Non-Commissioned Offic...</td>\n",
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       "      <td>B883</td>\n",
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       "      <td>515</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>A10605</td>\n",
       "      <td>Personnel Occurrence Reports</td>\n",
       "      <td>396</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>A6135</td>\n",
       "      <td>Photographic colour transparencies positives, ...</td>\n",
       "      <td>226</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>D4881</td>\n",
       "      <td>Alien registration cards, alphabetical series</td>\n",
       "      <td>66</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>MP367/1</td>\n",
       "      <td>General correspondence files</td>\n",
       "      <td>48</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>A9300</td>\n",
       "      <td>RAAF Officers Personnel files, 1921-1948</td>\n",
       "      <td>47</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>A12372</td>\n",
       "      <td>RAAF Personnel files - All Ranks [Main corresp...</td>\n",
       "      <td>40</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>BP5/2</td>\n",
       "      <td>Drawings of inventions for letters patent, sin...</td>\n",
       "      <td>37</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>B78</td>\n",
       "      <td>Alien registration documents</td>\n",
       "      <td>36</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>A2478</td>\n",
       "      <td>Non-British European migrant selection documents</td>\n",
       "      <td>34</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>MP84/1</td>\n",
       "      <td>Correspondence files, multiple number series</td>\n",
       "      <td>30</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>BP371/1</td>\n",
       "      <td>Correspondence registration booklets and cards</td>\n",
       "      <td>26</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>A705</td>\n",
       "      <td>Correspondence files, multiple number (Melbour...</td>\n",
       "      <td>25</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>A471</td>\n",
       "      <td>Courts-Martial files [including war crimes tri...</td>\n",
       "      <td>23</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>J3111</td>\n",
       "      <td>Queensland post office history files, alphabet...</td>\n",
       "      <td>23</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>J3109</td>\n",
       "      <td>Historic photographic collection assembled by ...</td>\n",
       "      <td>19</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>BP8/1</td>\n",
       "      <td>Mail service (contract) files, either annual s...</td>\n",
       "      <td>19</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>A13860</td>\n",
       "      <td>Medical Documents - Army (Department of Defenc...</td>\n",
       "      <td>19</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>SP908/1</td>\n",
       "      <td>Application for Registration of Aliens (other ...</td>\n",
       "      <td>18</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>21</th>\n",
       "      <td>A446</td>\n",
       "      <td>Correspondence files, annual single number ser...</td>\n",
       "      <td>18</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>22</th>\n",
       "      <td>J539</td>\n",
       "      <td>Correspondence files, multiple number series.</td>\n",
       "      <td>16</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>A1877</td>\n",
       "      <td>British migrants - Selection documents for fre...</td>\n",
       "      <td>14</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>J26</td>\n",
       "      <td>Medical case files, single number series with ...</td>\n",
       "      <td>13</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "     series                                       series_title  count\n",
       "0      B884  Citizen Military Forces Personnel Dossiers, 19...  20382\n",
       "1     A9301  RAAF Personnel files of Non-Commissioned Offic...   1207\n",
       "2      B883  Second Australian Imperial Force Personnel Dos...    515\n",
       "3    A10605                       Personnel Occurrence Reports    396\n",
       "4     A6135  Photographic colour transparencies positives, ...    226\n",
       "5     D4881      Alien registration cards, alphabetical series     66\n",
       "6   MP367/1                       General correspondence files     48\n",
       "7     A9300           RAAF Officers Personnel files, 1921-1948     47\n",
       "8    A12372  RAAF Personnel files - All Ranks [Main corresp...     40\n",
       "9     BP5/2  Drawings of inventions for letters patent, sin...     37\n",
       "10      B78                       Alien registration documents     36\n",
       "11    A2478   Non-British European migrant selection documents     34\n",
       "12   MP84/1       Correspondence files, multiple number series     30\n",
       "13  BP371/1     Correspondence registration booklets and cards     26\n",
       "14     A705  Correspondence files, multiple number (Melbour...     25\n",
       "15     A471  Courts-Martial files [including war crimes tri...     23\n",
       "16    J3111  Queensland post office history files, alphabet...     23\n",
       "17    J3109  Historic photographic collection assembled by ...     19\n",
       "18    BP8/1  Mail service (contract) files, either annual s...     19\n",
       "19   A13860  Medical Documents - Army (Department of Defenc...     19\n",
       "20  SP908/1  Application for Registration of Aliens (other ...     18\n",
       "21     A446  Correspondence files, annual single number ser...     18\n",
       "22     J539      Correspondence files, multiple number series.     16\n",
       "23    A1877  British migrants - Selection documents for fre...     14\n",
       "24      J26  Medical case files, single number series with ...     13"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "series = df.value_counts([\"series\", \"series_title\"]).to_frame().reset_index()\n",
    "series.columns = [\"series\", \"series_title\", \"count\"]\n",
    "series[:25]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can see that the most of the files come from just four series containing miltary service records. This reflects the NAA's [current digitisation priorities](https://www.naa.gov.au/about-us/media-and-publications/media-releases/national-archives-signs-contracts-worth-44m-digitise-second-world-war-service-records)."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## The long tail\n",
    "\n",
    "Let's go to the other end of the dataset and look at the series that appear 20 or less times."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
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       "      <th>series</th>\n",
       "      <th>series_title</th>\n",
       "      <th>count</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>J3109</td>\n",
       "      <td>Historic photographic collection assembled by ...</td>\n",
       "      <td>19</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>BP8/1</td>\n",
       "      <td>Mail service (contract) files, either annual s...</td>\n",
       "      <td>19</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>A13860</td>\n",
       "      <td>Medical Documents - Army (Department of Defenc...</td>\n",
       "      <td>19</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>SP908/1</td>\n",
       "      <td>Application for Registration of Aliens (other ...</td>\n",
       "      <td>18</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>21</th>\n",
       "      <td>A446</td>\n",
       "      <td>Correspondence files, annual single number ser...</td>\n",
       "      <td>18</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>369</th>\n",
       "      <td>BP190/4</td>\n",
       "      <td>'RT' series rifle range tenure correspondence ...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>370</th>\n",
       "      <td>BP242/1</td>\n",
       "      <td>Correspondence files relating to national secu...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>371</th>\n",
       "      <td>BP25/1</td>\n",
       "      <td>Alien registration papers, alphabetical series...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>372</th>\n",
       "      <td>BP460/3</td>\n",
       "      <td>Main Trust files annual single number series</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>373</th>\n",
       "      <td>C424</td>\n",
       "      <td>General correspondence files, annual single nu...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>357 rows × 3 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "      series                                       series_title  count\n",
       "17     J3109  Historic photographic collection assembled by ...     19\n",
       "18     BP8/1  Mail service (contract) files, either annual s...     19\n",
       "19    A13860  Medical Documents - Army (Department of Defenc...     19\n",
       "20   SP908/1  Application for Registration of Aliens (other ...     18\n",
       "21      A446  Correspondence files, annual single number ser...     18\n",
       "..       ...                                                ...    ...\n",
       "369  BP190/4  'RT' series rifle range tenure correspondence ...      1\n",
       "370  BP242/1  Correspondence files relating to national secu...      1\n",
       "371   BP25/1  Alien registration papers, alphabetical series...      1\n",
       "372  BP460/3       Main Trust files annual single number series      1\n",
       "373     C424  General correspondence files, annual single nu...      1\n",
       "\n",
       "[357 rows x 3 columns]"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "series.loc[series[\"count\"] < 21]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
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       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>series</th>\n",
       "      <th>series_title</th>\n",
       "      <th>count</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>164</th>\n",
       "      <td>ST1233/1</td>\n",
       "      <td>Investigation files, single number series with...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>165</th>\n",
       "      <td>K26</td>\n",
       "      <td>Personal case files, single number series with...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>166</th>\n",
       "      <td>J992</td>\n",
       "      <td>Mail Service files, North Queensland, single n...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>167</th>\n",
       "      <td>K60</td>\n",
       "      <td>Personal case files, single number with 'M' an...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>168</th>\n",
       "      <td>K269</td>\n",
       "      <td>Inward passenger manifests for ships and aircr...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>369</th>\n",
       "      <td>BP190/4</td>\n",
       "      <td>'RT' series rifle range tenure correspondence ...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>370</th>\n",
       "      <td>BP242/1</td>\n",
       "      <td>Correspondence files relating to national secu...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>371</th>\n",
       "      <td>BP25/1</td>\n",
       "      <td>Alien registration papers, alphabetical series...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>372</th>\n",
       "      <td>BP460/3</td>\n",
       "      <td>Main Trust files annual single number series</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>373</th>\n",
       "      <td>C424</td>\n",
       "      <td>General correspondence files, annual single nu...</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>210 rows × 3 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "       series                                       series_title  count\n",
       "164  ST1233/1  Investigation files, single number series with...      1\n",
       "165       K26  Personal case files, single number series with...      1\n",
       "166      J992  Mail Service files, North Queensland, single n...      1\n",
       "167       K60  Personal case files, single number with 'M' an...      1\n",
       "168      K269  Inward passenger manifests for ships and aircr...      1\n",
       "..        ...                                                ...    ...\n",
       "369   BP190/4  'RT' series rifle range tenure correspondence ...      1\n",
       "370   BP242/1  Correspondence files relating to national secu...      1\n",
       "371    BP25/1  Alien registration papers, alphabetical series...      1\n",
       "372   BP460/3       Main Trust files annual single number series      1\n",
       "373      C424  General correspondence files, annual single nu...      1\n",
       "\n",
       "[210 rows x 3 columns]"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "series.loc[series[\"count\"] == 1]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "So 357 of 375 series (that's 95%) appear 20 or less times. That's a classic 'long tail', and presumably reflects the diversity of interests that fuel 'digitisation on demand' requests. But this really needs more analysis\n",
    "\n",
    "We can visualise the long tail by using a logarithmic scale to display the count. You'll see that most series only have one digitised file (mouse over the bars for series details)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
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Army (Department of Defence Medical Documents)\", \"count\": 19}, {\"series\": \"SP908/1\", \"series_title\": \"Application for Registration of Aliens (other than Asiatics)\", \"count\": 18}, {\"series\": \"A446\", \"series_title\": \"Correspondence files, annual single number series with block allocations [Main correspondence files series of the agency]\", \"count\": 18}, {\"series\": \"J539\", \"series_title\": \"Correspondence files, multiple number series.\", \"count\": 16}, {\"series\": \"A1877\", \"series_title\": \"British migrants - Selection documents for free or assisted passage (Commonwealth nominees)\", \"count\": 14}, {\"series\": \"J26\", \"series_title\": \"Medical case files, single number series with 'M' (First World War ex-servicemen) prefix\", \"count\": 13}, {\"series\": \"D400\", \"series_title\": \"Correspondence files, annual single number series with 'SA' and 'S' prefix\", \"count\": 12}, {\"series\": \"BP709/1\", \"series_title\": \"Repatriation Medical case files for First World War [includes some Boer War] ex-servicemen (deceased members files).\", \"count\": 12}, {\"series\": \"J1200\", \"series_title\": \"Allotment Ledger (WF 45) and Pay Ledger and History Cards (WF 3 and 3H) for Queensland army personnel, single number series with \\\"F1\\\" (Female - 1st Military District) prefix.\", \"count\": 11}, {\"series\": \"A435\", \"series_title\": \"Class 4 correspondence files relating to naturalisation\", \"count\": 11}, {\"series\": \"J25\", \"series_title\": \"Case files, annual single number series with or without 'Q' [Queensland] or 'QB' [Queensland Brisbane] or 'CLF' [Client Files] prefix\", \"count\": 10}, {\"series\": \"BP13/1\", \"series_title\": \"Correspondence files relating to the establishment and continuance of individual post offices in Queensland, annual single number series with an alphabetical prefix\", \"count\": 10}, {\"series\": \"MP472/1\", \"series_title\": \"Correspondence files, annual single number series\", \"count\": 10}, {\"series\": \"C4177\", \"series_title\": \"Plans and drawings of various Commonwealth buildings in New South Wales, single number series\", \"count\": 10}, {\"series\": \"A1838\", \"series_title\": \"Correspondence files, multiple number series [Main correspondence files series of the agency]\", \"count\": 10}, {\"series\": \"J558\", \"series_title\": \"Correspondence files, relating to the administration and functioning of the Australian Postal Corporation in Queensland, multiple number series with 'PQ' (Postal Queensland) prefix\", \"count\": 10}, {\"series\": \"C321\", \"series_title\": \"Case files, annual single number series with 'N' (NSW) prefix\", \"count\": 9}, {\"series\": \"J34\", \"series_title\": \"Pension case files, single number series with 'C' (First World War ex-servicemen) prefix\", \"count\": 9}, {\"series\": \"D4878\", \"series_title\": \"Alien registration documents, alphabetical series\", \"count\": 8}, {\"series\": \"A2562\", \"series_title\": \"General Assisted Passage Scheme, Special Passage Assistance Program and Netherlands Australia Migration agreements selection documents, annual single number series\", \"count\": 8}, {\"series\": \"A8666\", \"series_title\": \"Correspondence files, multiple number system with activity suffixes\", \"count\": 8}, {\"series\": \"A9435\", \"series_title\": \"Commanding Officer Reports\", \"count\": 8}, {\"series\": \"J56\", \"series_title\": \"Property correspondence files, single number series with or without 'QL' prefix\", \"count\": 7}, {\"series\": \"A12933\", \"series_title\": \"Fraser Ministries - Cabinet Papers (some with Decisions)\", \"count\": 7}, {\"series\": \"A8425\", \"series_title\": \"Universal migration case files, annual single number series with block allocations and 'F' [Overseas Post]/from January 2000 'OSF' [Overseas Files] prefix [Main correspondence files series of the agency]\", \"count\": 7}, {\"series\": \"B13\", \"series_title\": \"General and classified correspondence, annual single number series\", \"count\": 7}, {\"series\": \"SP857/6\", \"series_title\": \"Correspondence re Army Hirings\", \"count\": 6}, {\"series\": \"K1\", \"series_title\": \"Correspondence files, annual single number series\", \"count\": 6}, {\"series\": \"A714\", \"series_title\": \"Books of duplicate certificates of naturalization A(1)[Individual person] series\", \"count\": 5}, {\"series\": \"J1\", \"series_title\": \"Correspondence files relating to the administration and functioning of the Postmaster General's Department and from 1975,  Telecom Australia,  multiple number series with 'Q' or 'QE' prefix\", \"count\": 5}, {\"series\": \"SP1121/1\", \"series_title\": \"Applications for Registration of Aliens\", \"count\": 5}, {\"series\": \"J1622\", \"series_title\": \"Mail service files, single number series with 'MSF' (Mail Service Fixed Term) or 'MSI' (Mail Service Indefinite Term) prefix\", \"count\": 5}, {\"series\": \"A6180\", \"series_title\": \"Photographic negatives and prints, daily single number series\", \"count\": 5}, {\"series\": \"BP4/3\", \"series_title\": \"Alien registration forms, alphabetical series by nationality\", \"count\": 5}, {\"series\": \"MP508/1\", \"series_title\": \"General correspondence files, multiple number series\", \"count\": 5}, {\"series\": \"B26\", \"series_title\": \"Personal case files, World War II\", \"count\": 5}, {\"series\": \"MP551/1\", \"series_title\": \"Ships' drawings and specifications, together with those for two floating docks\", \"count\": 5}, {\"series\": \"MP341/1\", \"series_title\": \"General correspondence 'G' files, annual single number series\", \"count\": 5}, {\"series\": \"J2926\", \"series_title\": \"Eagle Farm Airport and New Brisbane Airport photographs, alpha numeric series\", \"count\": 5}, {\"series\": \"A712\", \"series_title\": \"Letters received, annual single number series with letter prefix or infix\", \"count\": 5}, {\"series\": \"D399\", \"series_title\": \"Correspondence files, annual single number series with 'S' prefix\", \"count\": 4}, {\"series\": \"A997\", \"series_title\": \"Applications for Permit to enter Australia, Form 47, (with Form 47A)\", \"count\": 4}, {\"series\": \"A261\", \"series_title\": \"Application forms (culled from other file series) for admission of Relatives or Friends to Australia (Form 40)\", \"count\": 4}, {\"series\": \"B44\", \"series_title\": \"Immigration case files, annual single number series with 'V' [Victoria] prefix\", \"count\": 4}, {\"series\": \"MP729/6\", \"series_title\": \"Secret correspondence files, multiple number series with '401' infix. [Main correspondence files series of the agency]\", \"count\": 4}, {\"series\": \"A3978\", \"series_title\": \"Confidential Reports - Naval Officers (forms S206, PP101)\", \"count\": 4}, {\"series\": \"A659\", \"series_title\": \"Correspondence files, class 1 (general, passports)\", \"count\": 4}, {\"series\": \"E460\", \"series_title\": \"Correspondence files, annual single number series\", \"count\": 4}, {\"series\": \"MP287/1\", \"series_title\": \"General correspondence files\", \"count\": 4}, {\"series\": \"SP244/2\", \"series_title\": \"Correspondence of the Chief Migration Officer relating to restricted migration.\", \"count\": 4}, {\"series\": \"A11731\", \"series_title\": \"Applications for Registration of Victorian Trade Marks\", \"count\": 4}, {\"series\": \"D596\", \"series_title\": \"Correspondence files, annual single number series\", \"count\": 4}, {\"series\": \"MT1139/1\", \"series_title\": \"First World War munition workers dossiers\", \"count\": 4}, {\"series\": \"SP42/1\", \"series_title\": \"Correspondence of the Collector of Customs relating to Immigration Restriction and Passports\", \"count\": 4}, {\"series\": \"C138\", \"series_title\": \"Personal case files, single number series (Australian, 1914-1918 War)\", \"count\": 4}, {\"series\": \"J406\", \"series_title\": \"Main trust files, annual single number series\", \"count\": 4}, {\"series\": \"MP65/3\", \"series_title\": \"Correspondence files, annual single number series with \\\"GA\\\" prefix\", \"count\": 4}, {\"series\": \"MT1078/1\", \"series_title\": \"European migrants general personal files 1959\", \"count\": 4}, {\"series\": \"A13966\", \"series_title\": \"Photograph and photograph negatives taken by AUSPIC, official photographers for the Government.\", \"count\": 4}, {\"series\": \"B2458\", \"series_title\": \"Army Personnel Files, multiple number series\", \"count\": 4}, {\"series\": \"MT1486/1\", \"series_title\": \"Applications to enlist in the Australian Imperial Force\", \"count\": 3}, {\"series\": \"A6119\", \"series_title\": \"Personal files, alpha-numeric series\", \"count\": 3}, {\"series\": \"A715\", \"series_title\": \"Book of duplicate certificates of naturalization A(2) series\", \"count\": 3}, {\"series\": \"K47\", \"series_title\": \"Correspondence files, annual single number series with 'W' prefix\", \"count\": 3}, {\"series\": \"J1201\", \"series_title\": \"Allotment Ledger (WF 45) and Pay Ledger and History Cards (WF 3 and 3H) for Queensland army personnel, single number series with \\\"1\\\" (1st Military District)\", \"count\": 3}, {\"series\": \"B503\", \"series_title\": \"Application forms for grants and associated documents, single number series with alphabetical prefixes. [Prisoners of War Trust Fund]\", \"count\": 3}, {\"series\": \"K1331\", \"series_title\": \"Alien registration documents, alphabetical series\", \"count\": 3}, {\"series\": \"A6770\", \"series_title\": \"Service Cards for Petty Officers and Men, 1911-1970\", \"count\": 3}, {\"series\": \"K669\", \"series_title\": \"Applications for Australian Citizenship, single number series with alphabetical prefixes\", \"count\": 3}, {\"series\": \"ST859/3\", \"series_title\": \"Job files\", \"count\": 3}, {\"series\": \"J1770\", \"series_title\": \"Weather station files, single number series\", \"count\": 3}, {\"series\": \"SP1122/1\", \"series_title\": \"General correspondence files, multiple number series and annual single number with 'N' (New South Wales) prefix\", \"count\": 3}, {\"series\": \"A2917\", \"series_title\": \"Migrant selection documents, annual single number series with 'SD' prefix\", \"count\": 3}, {\"series\": \"PP302/1\", \"series_title\": \"Correspondence files, single number series with 'WA' prefix\", \"count\": 3}, {\"series\": \"A1336\", \"series_title\": \"Applications for Literary and Dramatic Copyright (with exhibits)\", \"count\": 3}, {\"series\": \"MP210/2\", \"series_title\": \"Personal and Medical Documents of British Assisted Migrants\", \"count\": 3}, {\"series\": \"B741\", \"series_title\": \"Correspondence files, single number series with \\\"V\\\" (Victoria) prefix.\", \"count\": 3}, {\"series\": \"SP388/1\", \"series_title\": \"Personal documents of British Assisted Migrants\", \"count\": 3}, {\"series\": \"D1358\", \"series_title\": \"Army pay files (2AIF), single number series with 'SX' prefix\", \"count\": 3}, {\"series\": \"A12217\", \"series_title\": \"Alien Land Transfer files, single number with L [Land] prefix\", \"count\": 3}, {\"series\": \"MP1156/1\", \"series_title\": \"Migrant files, annual single number series, with \\\"V\\\" (Victorian) prefix\", \"count\": 3}, {\"series\": \"BP751/1\", \"series_title\": \"Pay history and allotment cards of discharged RAAF ex-service personnel, single number series\", \"count\": 3}, {\"series\": \"A2023\", \"series_title\": \"Correspondence files, multiple number series with 'A', 'B', 'D' or 'E' prefix\", \"count\": 3}, {\"series\": \"M2642\", \"series_title\": \"Publications and other reference material concerning Aboriginals\", \"count\": 2}, {\"series\": \"B73\", \"series_title\": \"Personal case files, World War I\", \"count\": 2}, {\"series\": \"MP1185/8\", \"series_title\": \"Secret and confidential correspondence files, multiple number series\", \"count\": 2}, {\"series\": \"MP33/1\", \"series_title\": \"States' files - NSW, Queensland, Victoria, South Australia, Western Australia, Tasmania\", \"count\": 2}, {\"series\": \"A11768\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Nelly departing Naples 18 October 1949\", \"count\": 2}, {\"series\": \"BP9/3\", \"series_title\": \"Personal statements and declaration of aliens entering the state of Queensland, alphabetical series\", \"count\": 2}, {\"series\": \"BP966/1\", \"series_title\": \"Mail service files, single number series with 'MSF' (Mail Service Fixed Term) or 'MSI' (Mail Service Indefinite Term) prefix\", \"count\": 2}, {\"series\": \"MP195/1\", \"series_title\": \"Migrant selection documents of British migrants applying for Assisted Passage to Australia under the United Kingdom and Australian Government Agreement\", \"count\": 2}, {\"series\": \"MP16/1\", \"series_title\": \"World War I Intelligence section case files, annual single number series\", \"count\": 2}, {\"series\": \"B168\", \"series_title\": \"Correspondence files, annual single number series\", \"count\": 2}, {\"series\": \"BP264/1\", \"series_title\": \"Inwards ships passenger manifests, Brisbane and other Queensland Ports (forms M308), chronlogical series\", \"count\": 2}, {\"series\": \"BP355/4\", \"series_title\": \"Official rainfall station files - Annual single number with P infix\", \"count\": 2}, {\"series\": \"SP244/3\", \"series_title\": \"Applications for landing permits [Migrant selection documents]\", \"count\": 2}, {\"series\": \"BP289/1\", \"series_title\": \"Alien registration cards two number series\", \"count\": 2}, {\"series\": \"BP260/1\", \"series_title\": \"Correspondence files relating to PMG buildings and sites, annual single number series with 'IB' prefix\", \"count\": 2}, {\"series\": \"CP979/2\", \"series_title\": \"Applications for War Gratuity made to the Department of the Navy [World War 1]\", \"count\": 2}, {\"series\": \"BP190/1\", \"series_title\": \"'RR' series rifle range correspondence files, relating to the acquisition, tenure, maintenance and functioning of rifle ranges in Queensland, border towns, and Territory of Papua New Guinea\", \"count\": 2}, {\"series\": \"A11794\", \"series_title\": \"Records relating to campaign awards for seafarerswho served  in the Merchant Navy during hostilities from the second world war onwards, single number series\", \"count\": 2}, {\"series\": \"D4096\", \"series_title\": \"Royal Commission into Aboriginal Deaths in Custody exhibit records, multiple number series with variable alpha prefix\", \"count\": 2}, {\"series\": \"A11628\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Skaugum departing Naples 2 May 1949\", \"count\": 2}, {\"series\": \"A11901\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Skaugum departing Naples 2 November 1949\", \"count\": 2}, {\"series\": \"D2994\", \"series_title\": \"Army payfiles (1 AIF), alphabetical series\", \"count\": 2}, {\"series\": \"B411\", \"series_title\": \"Correspondence files, (\\\"subject files\\\"), annual single number series with \\\"V\\\" Victoria prefix\", \"count\": 2}, {\"series\": \"MT885/1\", \"series_title\": \"General correspondence relating to personnel, 1943-1951, multiple number and alpha-numeric series\", \"count\": 2}, {\"series\": \"A11914\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Protea departing Genoa 16 November 1948\", \"count\": 2}, {\"series\": \"PP181/2\", \"series_title\": \"British, Irish and Maltese migrant selection documents, alphabetical series\", \"count\": 2}, {\"series\": \"PP4/1\", \"series_title\": \"British migrant selection documents, single number series\", \"count\": 2}, {\"series\": \"A1337\", \"series_title\": \"Applications for Registration of a Design\", \"count\": 2}, {\"series\": \"K1213\", \"series_title\": \"Historical collection of records compiled by the Post and Telecom Museum\", \"count\": 2}, {\"series\": \"PP350/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 2}, {\"series\": \"J1781\", \"series_title\": \"Allotment ledger (WF 45) and pay ledger and history cards (WF 3 and 3H) for Torres Strait Units personnel, single number series with Q [Queensland] prefix\", \"count\": 2}, {\"series\": \"P2812\", \"series_title\": \"Photographs of operations and maintenance of Tasmanian lightstations ,  alphabetical by name of lightstation\", \"count\": 2}, {\"series\": \"PP6/1\", \"series_title\": \"Correspondence files [subject and client],  annual single number series with 'H' infix\", \"count\": 2}, {\"series\": \"A12026\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per General Greely departing Naples, Italy 17 April 1950\", \"count\": 2}, {\"series\": \"K1145\", \"series_title\": \"Certificates of Exemption from Dictation Test, annual certificate number order\", \"count\": 2}, {\"series\": \"A14039\", \"series_title\": \"Second, Third and Fourth Hawke Ministries - Submissions and Memoranda\", \"count\": 2}, {\"series\": \"A13859\", \"series_title\": \"Medical Documents - RAAF (Department of Defence Unit Medical Documents)\", \"count\": 2}, {\"series\": \"K1076\", \"series_title\": \"Plans and drawings, single number series [imposed]\", \"count\": 2}, {\"series\": \"A3177\", \"series_title\": \"Crown Solicitor's copies of Solicitor-General's opinions\", \"count\": 2}, {\"series\": \"PP9/2\", \"series_title\": \"Correspondence [client] files, annual single number series with numerical infix\", \"count\": 2}, {\"series\": \"A12508\", \"series_title\": \"Personal Statement and Declaration by alien passengers entering Australia (Forms A42)\", \"count\": 2}, {\"series\": \"PP9/4\", \"series_title\": \"Alien passports and travel documents, alphabetical series\", \"count\": 2}, {\"series\": \"SP11/5\", \"series_title\": \"Applications for registration (aliens registration files) (forms A1, B1 and C), alphabetical series - naturalized\", \"count\": 2}, {\"series\": \"A12288\", \"series_title\": \"Applications for permission to remain in Australia upon discharge from the British Armed Forces lodged both in Australia and abroad (Form 49) [and Royal Air Force release letters for British airmen and airwomen]\", \"count\": 2}, {\"series\": \"J30\", \"series_title\": \"Hospital case files, single number series with 'H' (First World War ex-servicemen) prefix\", \"count\": 2}, {\"series\": \"A10406\", \"series_title\": \"Citizenship application forms\", \"count\": 2}, {\"series\": \"J32\", \"series_title\": \"Hospital case files, single number series with 'HX' (Second World War ex-servicemen) prefix\", \"count\": 2}, {\"series\": \"A12046\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Castelbianco departing Bremerhaven 14 November 1950\", \"count\": 2}, {\"series\": \"A2559\", \"series_title\": \"Non-British European Migrant Selection Documents, Assisted Passage Schemes, numerical series.\", \"count\": 2}, {\"series\": \"MP178/2\", \"series_title\": \"Correspondence files, multiple number series\", \"count\": 2}, {\"series\": \"SP1714/1\", \"series_title\": \"Investigation files, single number series with 'N' [New South Wales] prefix\", \"count\": 2}, {\"series\": \"J1204\", \"series_title\": \"Allotment Ledger (WF 45) and Pay Ledger and History Cards (WF 3 and 3H) for Queensland Militia army personnel, single number series with \\\"Q\\\" (Queensland) prefix.\", \"count\": 2}, {\"series\": \"PP19/2\", \"series_title\": \"Medical examination forms (form 47a) for non-British migrants, single number series\", \"count\": 2}, {\"series\": \"A367\", \"series_title\": \"Correspondence files, single number series with year prefix, 1916-1927, and 'C' prefix, 1927-1953 [Main correspondence files series of the agency]\", \"count\": 2}, {\"series\": \"PP208/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 2}, {\"series\": \"A11951\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Fairsea departing Naples 11 May 1949\", \"count\": 2}, {\"series\": \"PP110/3\", \"series_title\": \"Medical examination forms (form 47A) for non-British migrants, single number series\", \"count\": 2}, {\"series\": \"PP2/8\", \"series_title\": \"Assistance and medical files, 1914/18 War, single number series with 'R' prefix\", \"count\": 2}, {\"series\": \"PP1/1\", \"series_title\": \"Crew lists for  ships entering Western Australian ports and Western Australian airports and for aircraft entering Guildford Airport for the year of 1945, multiple number series\", \"count\": 2}, {\"series\": \"P804\", \"series_title\": \"Army pay files, single number series with TX or TFX prefix\", \"count\": 2}, {\"series\": \"A441\", \"series_title\": \"Correspondence files, multiple number series, Class 13 (Migrants H-K)\", \"count\": 2}, {\"series\": \"A432\", \"series_title\": \"Correspondence files, annual single number series [Main correspondence files series of the agency]\", \"count\": 2}, {\"series\": \"ST1233/1\", \"series_title\": \"Investigation files, single number series with 'N' [New South Wales] prefix\", \"count\": 1}, {\"series\": \"K26\", \"series_title\": \"Personal case files, single number series with 'X' and other letter prefixes\", \"count\": 1}, {\"series\": \"J992\", \"series_title\": \"Mail Service files, North Queensland, single numbered series with \\\"MSF\\\" (Mail Service Fixed Term) or \\\"MSI\\\" (Mail Service indefinite term) prefix\", \"count\": 1}, {\"series\": \"K60\", \"series_title\": \"Personal case files, single number with 'M' and other letter prefixes series\", \"count\": 1}, {\"series\": \"K269\", \"series_title\": \"Inward passenger manifests for ships and aircraft arriving at Fremantle, Perth Airport and Western Australian outports, chronological series\", \"count\": 1}, {\"series\": \"J716\", \"series_title\": \"Ships passenger lists, Brisbane outwards, chronological series\", \"count\": 1}, {\"series\": \"SP43/2\", \"series_title\": \"Investigation files, multiple number series with 'N' [New South Wales] prefix\", \"count\": 1}, {\"series\": \"ST1673/2\", \"series_title\": \"Personal history cards of members of the Civil Construction Corps\", \"count\": 1}, {\"series\": \"K1294\", \"series_title\": \"Post office site plans, alphabetical series\", \"count\": 1}, {\"series\": \"K1346\", \"series_title\": \"Photographs relating to various aspects of research, D L Serventy, single number series\", \"count\": 1}, {\"series\": \"MP1174/1\", \"series_title\": \"Records of the Christmas Island Phosphate Commission (includes correspondence from the British Phosphate Commissioners)\", \"count\": 1}, {\"series\": \"K1055\", \"series_title\": \"Personal history cards of staff employed in Munitions Factory, Western Australia, alphabetical order\", \"count\": 1}, {\"series\": \"K1143\", \"series_title\": \"Pay ledger cards of ex-servicemen (returned to Australia) of 1914/18 War who enlisted in Western Australia, alphabetical order\", \"count\": 1}, {\"series\": \"M5197\", \"series_title\": \"Colour photographic (kodachrome) slides illustrating the life and career of Sir Keith Charles Owen Shann CBE\", \"count\": 1}, {\"series\": \"SP476/1\", \"series_title\": \"Personal documents of British assisted migrants\", \"count\": 1}, {\"series\": \"SP500/1\", \"series_title\": \"Personal documents of British assisted migrants\", \"count\": 1}, {\"series\": \"MP1155/1\", \"series_title\": \"1962 General Files\", \"count\": 1}, {\"series\": \"MP1116/3\", \"series_title\": \"Articles of Agreement, Log Books and Releases (forms M & S 3, M & S 12 and M & S 9)\", \"count\": 1}, {\"series\": \"K1174\", \"series_title\": \"Italian prisoners of war files, alphabetical order\", \"count\": 1}, {\"series\": \"MP1049/5\", \"series_title\": \"Correspondence files (general)\", \"count\": 1}, {\"series\": \"MP1049/9\", \"series_title\": \"Correspondence files (general)\", \"count\": 1}, {\"series\": \"SP459/1\", \"series_title\": \"Correspondence files, multiple number series\", \"count\": 1}, {\"series\": \"SP11/2\", \"series_title\": \"Applications for registration (Aliens Registration files) (Forms A1, B1 and C), alphabetical series by nationality\", \"count\": 1}, {\"series\": \"MP187/4\", \"series_title\": \"Aircraft accident report files, single number series\", \"count\": 1}, {\"series\": \"PP855/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP276/1\", \"series_title\": \"British migrant selection documents, alphabetical series\", \"count\": 1}, {\"series\": \"SP16/4\", \"series_title\": \"Property files for sites in NSW hired or acquired for the Department of Defence during World War II\", \"count\": 1}, {\"series\": \"PP316/4\", \"series_title\": \"British migrant selection documents, alphabetical series\", \"count\": 1}, {\"series\": \"SP1411/3\", \"series_title\": \"Building files, B series\", \"count\": 1}, {\"series\": \"PP381/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP383/1\", \"series_title\": \"British migrant selection documents, alphabetical series\", \"count\": 1}, {\"series\": \"PP551/1\", \"series_title\": \"Correspondence [client], files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP612/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP678/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP704/1\", \"series_title\": \"British migrant selection documents, alphabetical series\", \"count\": 1}, {\"series\": \"PP851/1\", \"series_title\": \"Correspondence files [nominal rolls],  annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP869/1\", \"series_title\": \"Personal case files, single number series with 'M' and other letter prefixes\", \"count\": 1}, {\"series\": \"PP239/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP9/5\", \"series_title\": \"Medical examination forms (form 47A) for non-British migrants, single number series\", \"count\": 1}, {\"series\": \"PP93/8\", \"series_title\": \"British migrant selection documents, alphabetical series\", \"count\": 1}, {\"series\": \"PP943/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP96/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PT1148/1\", \"series_title\": \"Personal files of National Service enlistees under Automatic Data Processing\", \"count\": 1}, {\"series\": \"PT1221/1\", \"series_title\": \"Personal files of enlisted National Service registrants\", \"count\": 1}, {\"series\": \"PT1775/6\", \"series_title\": \"Correspondence files, entry conditions to other countries and passport enquiries (local and inter-state), multiple number series\", \"count\": 1}, {\"series\": \"PT3/3\", \"series_title\": \"Aircraft, pilots and ground engineers, navigators, flying instructors, licenses register from 1921 to 19/6/1940. Issued by the Department of Defence (Civil Aviation Branch) later known as the Department of Civil Aviation\", \"count\": 1}, {\"series\": \"PT490/1\", \"series_title\": \"Wills of Deceased Servicemen\", \"count\": 1}, {\"series\": \"SP104/1\", \"series_title\": \"Personal documents of British assisted migrants, annual single number series\", \"count\": 1}, {\"series\": \"SP1048/7\", \"series_title\": \"General correspondence, 'S' (Secret) series\", \"count\": 1}, {\"series\": \"PP256/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"PP222/6\", \"series_title\": \"British migrant selection documents, alphabetical series\", \"count\": 1}, {\"series\": \"MP347/1\", \"series_title\": \"General Correspondence files\", \"count\": 1}, {\"series\": \"MP76/1\", \"series_title\": \"Inventions correspondence files, single number series\", \"count\": 1}, {\"series\": \"SP414/3\", \"series_title\": \"Part XII Bankrupts' files - Deeds of Arrangement proceedings under Part XII of Bankruptcy Act.\", \"count\": 1}, {\"series\": \"MP392/8\", \"series_title\": \"Correspondence, schedules, drawings and publications of the Armoured Fighting Vehicles Directorate\", \"count\": 1}, {\"series\": \"MP404/1\", \"series_title\": \"General correspondence files (G series)\", \"count\": 1}, {\"series\": \"SP368/1\", \"series_title\": \"Artists files\", \"count\": 1}, {\"series\": \"MP49/6\", \"series_title\": \"Correspondence files, annual multiple number series\", \"count\": 1}, {\"series\": \"SP320/4\", \"series_title\": \"Application for Registration of Periodicals and Newspapers\", \"count\": 1}, {\"series\": \"MP598/30\", \"series_title\": \"Typescript of Jensen's Defence Production in Australia\\\" and supporting evidence\", \"count\": 1}, {\"series\": \"MP61/1\", \"series_title\": \"Correspondence files, multiple number series\", \"count\": 1}, {\"series\": \"MP730/8\", \"series_title\": \"Draft of Chapter 8 with related official papers\", \"count\": 1}, {\"series\": \"MP742/1\", \"series_title\": \"General and civil staff correspondence files and Army personnel files, multiple number series\", \"count\": 1}, {\"series\": \"MP744/1\", \"series_title\": \"South African Contingents Pay Office correspondence\", \"count\": 1}, {\"series\": \"SP109/16\", \"series_title\": \"General correspondence\", \"count\": 1}, {\"series\": \"PP202/7\", \"series_title\": \"Correspondence files [nominal rolls], annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"MP981/1\", \"series_title\": \"Correspondence files, multiple number series ('201' series)\", \"count\": 1}, {\"series\": \"MT1131/1\", \"series_title\": \"General and civil staff correspondence files and Army personnel files, multiple number series\", \"count\": 1}, {\"series\": \"MT970/1\", \"series_title\": \"European migrants general personal files\", \"count\": 1}, {\"series\": \"P3\", \"series_title\": \"Personal case files, annual single number series with 'T' (Tasmania) prefix\", \"count\": 1}, {\"series\": \"P87\", \"series_title\": \"Sequestration Files, annual single number series with \\\"S\\\" (Sequestration) prefix/ (from 1987) with \\\"TB\\\" (Tasmanian Bankrupt) prefix\", \"count\": 1}, {\"series\": \"PP117/1\", \"series_title\": \"Correspondence files, policy, procedure, administration, annual single number series with 'G' prefix\", \"count\": 1}, {\"series\": \"PP14/1\", \"series_title\": \"Intelligence reports of internments, repatriations, affiliations and general investigations, multiple number series\", \"count\": 1}, {\"series\": \"PP168/1\", \"series_title\": \"Correspondence [client] files, annual single number series with 'W' prefix\", \"count\": 1}, {\"series\": \"SP196/2\", \"series_title\": \"Personal files of Prisoners of War [POWs]\", \"count\": 1}, {\"series\": \"PP2/11\", \"series_title\": \"British pension files, 1914/18 War, single number series with 'BP' prefix [includes pre-World War 1 pensioners & some Boer War pensioners, both British and Australian]\", \"count\": 1}, {\"series\": \"SP173/1\", \"series_title\": \"Artists files\", \"count\": 1}, {\"series\": \"MP80/2\", \"series_title\": \"Personal and Medical Documents of Maltese Migrants\", \"count\": 1}, {\"series\": \"A1\", \"series_title\": \"Correspondence files, annual single number series [Main correspondence files series of the agency]\", \"count\": 1}, {\"series\": \"J50\", \"series_title\": \"Sequestration order files, annual single number series with 'SQ' [South Queensland] or 'QB' [Queensland Bankruptcy] prefix\", \"count\": 1}, {\"series\": \"A12083\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Marine Jumper departing Guiuan, Samar, Phillipines 29 September 1949, arriving Sydney 9 October 1949\", \"count\": 1}, {\"series\": \"A1209\", \"series_title\": \"Correspondence files, annual single number series [classified] with occasional C [classified] suffix [Main correspondence files series of the agency]\", \"count\": 1}, {\"series\": \"A12090\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per  Nelly departing ex Bremerhaven 14 May 1950\", \"count\": 1}, {\"series\": \"A12136\", \"series_title\": \"Records of the Senate Standing, References and Legislation Committees on Community Affairs, multiple number series with 'CA GEN' [Community Affairs General] to 'CA REF' [Community Affairs Reference] prefix\", \"count\": 1}, {\"series\": \"A12384\", \"series_title\": \"Royal Commission on Intelligence and Security correspondence files, multiple number system withn alpha primary sequence in range J to K\", \"count\": 1}, {\"series\": \"A12514\", \"series_title\": \"Migrant applications for permission to enter Australia - Form M47\", \"count\": 1}, {\"series\": \"A12529\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Airflight departing Naples 19 December 1949\", \"count\": 1}, {\"series\": \"A13066\", \"series_title\": \"[Maralinga Litigation Material] Security vetting records for visitors to Maralinga during the Maralinga Rehabilitation Project\", \"count\": 1}, {\"series\": \"A1361\", \"series_title\": \"Correspondence files, multiple number series [Main correspondence files series of the agency]\", \"count\": 1}, {\"series\": \"A1445\", \"series_title\": \"Correspondence files, single number sequence with EPCHY [Enemy Property Claims, Hungary]\", \"count\": 1}, {\"series\": \"A14472\", \"series_title\": \"World War II Army Service documents - Victoria.\", \"count\": 1}, {\"series\": \"A1713\", \"series_title\": \"Correspondence files, single number series with 'S' prefix [Sale - Expropriated Properties, Papua New Guinea]\", \"count\": 1}, {\"series\": \"A1861\", \"series_title\": \"Applications for Artistic Copyright (with exhibits)\", \"count\": 1}, {\"series\": \"A1946\", \"series_title\": \"Correspondence files, annual single number series [Main correspondence files series of the agency]\", \"count\": 1}, {\"series\": \"A2087\", \"series_title\": \"Correspondence files, multiple number system with activity suffixes\", \"count\": 1}, {\"series\": \"A2218\", \"series_title\": \"Volumes of 'Printed Papers relating to the islands of the Pacific'.\", \"count\": 1}, {\"series\": \"A2421\", \"series_title\": \"Correspondence files, 'G' single number series\", \"count\": 1}, {\"series\": \"A2423\", \"series_title\": \"Personal case files, Australian Pensions, 1914-1918 (old) War, Single number series (with 'P' prefix to 1930)\", \"count\": 1}, {\"series\": \"A2671\", \"series_title\": \"War Cabinet agenda files, annual single number series\", \"count\": 1}, {\"series\": \"A2880\", \"series_title\": \"Correspondence files, multiple number series\", \"count\": 1}, {\"series\": \"A440\", \"series_title\": \"Correspondence files, multiple number series, Class 12 (Migrants D-G)\", \"count\": 1}, {\"series\": \"A442\", \"series_title\": \"Correspondence files, multiple number series, Class 14 (Migrants L-N)\", \"count\": 1}, {\"series\": \"A4617\", \"series_title\": \"(1) Retrospective copies of specifications of inventions for Letters Patent, granted between 1887 and 1904 (made c1905) (2) Applications for provisional certificates and Letters Patent (from c1903 to 1904) (3) Assignments of Letters Patent, granted between 1887 and 1904, (from c1905)\", \"count\": 1}, {\"series\": \"A472\", \"series_title\": \"Correspondence files, single number series with 'W' [War] prefix [Main correspondence files series of the agency]\", \"count\": 1}, {\"series\": \"A5954\", \"series_title\": \"'The Shedden Collection' [Records collected by Sir Frederick Shedden during his career with the Department of Defence and in researching the history of Australian Defence Policy], two number series\", \"count\": 1}, {\"series\": \"A6074\", \"series_title\": \"Correspondence files, single number series with 'PO' Property prefix\", \"count\": 1}, {\"series\": \"A6122\", \"series_title\": \"Subject files, multiple number series\", \"count\": 1}, {\"series\": \"A627\", \"series_title\": \"Applications for patents, single number series with year suffix\", \"count\": 1}, {\"series\": \"A7490\", \"series_title\": \"Migration case files, multiple number series (Bangkok)\", \"count\": 1}, {\"series\": \"A7764\", \"series_title\": \"Migration case files, multiple number series (Singapore)\", \"count\": 1}, {\"series\": \"A12089\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per  Nelly departing ex Bremerhaven 15 December 1949\", \"count\": 1}, {\"series\": \"A12073\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Skaubryn departing Bremerhaven 23 May 1951\", \"count\": 1}, {\"series\": \"A7907\", \"series_title\": \"Naturalisation 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\"series_title\": \"Applications for Registration of Queensland Trade Marks\", \"count\": 1}, {\"series\": \"A11770\", \"series_title\": \"Records relating to campaign awards for seafarers in the Merchant Navy, single number series\", \"count\": 1}, {\"series\": \"A11804\", \"series_title\": \"General Correspondence of Governor-General (excluding War files)\", \"count\": 1}, {\"series\": \"A11926\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Castelbianco departing Naples 5 July 1949\", \"count\": 1}, {\"series\": \"A11927\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Charlton Sovereign departing Bremerhaven 4 August 1948\", \"count\": 1}, {\"series\": \"A11928\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Hellenic Prince departing Naples 7 November 1949\", \"count\": 1}, {\"series\": \"A11940\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Castelbianco departing Naples 29 November 1949\", \"count\": 1}, {\"series\": \"A11955\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per General Taylor departing Naples 23 June 1949\", \"count\": 1}, {\"series\": \"A12002\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per General Stewart departing Naples 3 January 1950\", \"count\": 1}, {\"series\": \"A12017\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per General Muir departing Naples, Italy 18 February 1950\", \"count\": 1}, {\"series\": \"A12019\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Nelly departing Naples, Italy 23 February 1950\", \"count\": 1}, {\"series\": \"A12027\", \"series_title\": \"Migrant Selection Documents for 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Australia per Nelly departing Nordenham 22 November 1950\", \"count\": 1}, {\"series\": \"A12053\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Castelbianco departing Bremerhaven 5 June 1951 and  Naples 16 June 1951.\", \"count\": 1}, {\"series\": \"A12054\", \"series_title\": \"Migrant Selection Documents for Displaced Persons who travelled to Australia per Skaubryn departing Bremerhaven 2 August 1951\", \"count\": 1}, {\"series\": \"A7823\", \"series_title\": \"Migration case files, annual single number series (Manila)\", \"count\": 1}, {\"series\": \"A7919\", \"series_title\": \"Prisoners of War files, 1939-1945\", \"count\": 1}, {\"series\": \"J3088\", \"series_title\": \"Post and Telegraph (Qld) - various records from the museum collection, single number series with QPT (Queensland Post and Telegraph) imposed\", \"count\": 1}, {\"series\": \"BP873/1\", \"series_title\": \"Deceased World War I ex-servicemen's personal medical case files, single number series with an 'M' prefix\", \"count\": 1}, {\"series\": \"C123\", \"series_title\": \"World War II security investigation dossiers, single number series\", \"count\": 1}, {\"series\": \"C2403\", \"series_title\": \"General correspondence files, multiple number series with 'N' (New South Wales) prefix\", \"count\": 1}, {\"series\": \"C3629\", \"series_title\": \"Post Office History Files, alphabetical series\", \"count\": 1}, {\"series\": \"C3939\", \"series_title\": \"Correspondence files, single number series with 'N' (New South Wales) prefix\", \"count\": 1}, {\"series\": \"A10038\", \"series_title\": \"Writ of summons files, annual single number series with occasional 'OS' prefix [Cause Book case records - Queensland]\", \"count\": 1}, {\"series\": \"C599\", \"series_title\": \"Australian Women's Land Army personnel history cards, alphabetical series\", \"count\": 1}, {\"series\": \"C610\", \"series_title\": \"Australian Women's Land Army - personnel 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{\"series\": \"D4879\", \"series_title\": \"Forms 47A (medical examinations), landing and re-entry permits, arranged by ship name, chronologically and alphabetically\", \"count\": 1}, {\"series\": \"E1434\", \"series_title\": \"Correspondence files, single number series with \\\"K\\\" prefix\", \"count\": 1}, {\"series\": \"E1477\", \"series_title\": \"Records of Aboriginal land claim hearings, by claim title and number\", \"count\": 1}, {\"series\": \"E1509\", \"series_title\": \"Northern Land Council (NLC), correspondence files, annual single number series\", \"count\": 1}, {\"series\": \"E37\", \"series_title\": \"Correspondence files, annual single number series\", \"count\": 1}, {\"series\": \"J1018\", \"series_title\": \"Survey plans, single number series with 'L & S' (Lands and Survey) prefix\", \"count\": 1}, {\"series\": \"J1199\", \"series_title\": \"Allotment Ledger (WF 45) and Pay Ledger and History Cards (WF 3 and 3H) for Queensland army personnel, single number series 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      "text/plain": [
       "alt.Chart(...)"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "alt.Chart(series).mark_bar(size=2).encode(\n",
    "    x=alt.X(\"series\", sort=\"-y\", axis=alt.Axis(labels=False, ticks=False)),\n",
    "    y=alt.Y(\"count\", scale=alt.Scale(type=\"symlog\")),\n",
    "    tooltip=[\"series\", \"series_title\", \"count\"],\n",
    ").properties(width=800)"
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  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Other possibilities\n",
    "\n",
    "Once I've accumulated a longer record of digitisation it'll be interesting to see how things change over time. It would also be possible to use my RecordSearch Tools to find out how many pages there are in each digitised file.\n",
    "\n",
    "Of course you could other things with this data, such as setting up an RSS feed for updates, or creating a Twitter bot sharing recently-digitised files. Hmmm..."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "----\n",
    "\n",
    "Created by [Tim Sherratt](https://timsherratt.org) for the [GLAM Workbench](https://glam-workbench.github.io/), 2021.\n",
    "\n",
    "[Sponsor me on GitHub!](https://github.com/sponsors/wragge/)"
   ]
  }
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