diff --git a/sandbox/index.mdwn b/sandbox/index.mdwn
index fef13f857..6be8d9083 100644
--- a/sandbox/index.mdwn
+++ b/sandbox/index.mdwn
@@ -227,3 +227,9 @@ Vim like UI <https://pwmt.org/projects/girara/>
 - https://accessibility.blog.gov.uk/2017/02/08/advice-for-creating-content-that-works-well-with-screen-readers/
 
 ---
+
+- [[Types of indexing|https://www.anzsi.org/about-indexing/types-indexing/]]
+- [[Book Review Index Online - The New York Public Library|https://www.nypl.org/research/collections/articles-databases/book-review-index-online]]
+- [[Book Review Indexes/Databases - Finding Book Reviews - Libraries at Boston College|https://libguides.bc.edu/c.php?g=44053&p=279781]]
+
+---