QA catalogue for analysing library data

History of cataloging

The Y axis is based on the "date entered on file" data element that indicates the date the MARC record was created (008/00-05), the X axis is based on "Date 1" element (008/07-10).

This chart was implemented based on Benjamin Schmidt's blog post A brief visual history of MARC cataloging at the Library of Congress. (Tuesday, May 16, 2017).