About the Archived Library of Congress Subject Headings PDF Files
These earlier editions of Library of Congress Subject Headings (LCSH) are available for research purposes only. These editions may contain obsolete or superseded data and should not be used for current cataloging.
- 46th Edition (April 2025)
- 45th Edition (May 2024)
- 44th Edition (May 2022)
- 43rd Edition (April 2021)
- 42st Edition (April 2020)
- 41st Edition (April 2019)
- 40th Edition (January 2018)
- 39th Edition (April 2017)
- 38th Edition (January 2016)
- 37th Edition (January 2015)
- 36th Edition (June 2014)
- 35th Edition (January 2013)
- 34th Edition (March 2012)
