diff --git a/delta/corpus.py b/delta/corpus.py
index e76846d..59d9141 100644
--- a/delta/corpus.py
+++ b/delta/corpus.py
@@ -311,7 +311,7 @@ def __init__(self, operation):
 
 
 class Corpus(pd.DataFrame):
-    _metadata = ['metadata']
+    _metadata = ['metadata', 'logger', 'document_describer', 'feature_generator']
 
     def __init__(self, source=None, *, subdir=None, file=None, corpus=None,
                  feature_generator=None,
diff --git a/test/corpus_test.py b/test/corpus_test.py
index 43333d8..d282b03 100644
--- a/test/corpus_test.py
+++ b/test/corpus_test.py
@@ -1,3 +1,5 @@
+import numpy as np
+import pandas as pd
 from pytest import approx
 
 import delta as d
@@ -78,4 +80,13 @@ def test_featuredescriber_args(testdir):
 
 def test_parallel_corpus(testdir, corpus):
     parallel_corpus = d.Corpus(testdir, parallel=True)
-    assert (parallel_corpus == corpus).all().all()
\ No newline at end of file
+    assert (parallel_corpus == corpus).all().all()
+
+
+@pytest.mark.parametrize("attr_name", ["logger", "metadata", "feature_generator", "document_describer", "save"])
+def test_attribute_names(attr_name):
+    df = pd.DataFrame([[17, 4], [23, 42]],
+                      columns=['foo', attr_name],
+                      index=['doc1', 'doc2'])
+    corpus = d.Corpus(df)
+    assert list(corpus[attr_name]) == [4, 42]