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LIBRARY OF CONGRESS DEMOGRAPHIC GROUP TERMS (Last Updated 2018-01-31)

This area contains the Library of Congress Demographic Group Thesaurus in MARC UTF-8 format. It is made available in two versions: the full vocabulary and update files with any changes since the last time the full vocabulary was exported. These files are generated on the morning after the release of the list of approved subject heading changes (which occurs monthly).

All files are provided in ZIP format and contain their creation date as part of the file name. The full export files are named LCDGTvocab_YYMMDD.mrc.zip and the update files are named LCDGTvocab.updates_YYMMDD.mrc.zip. Update files contain new, updated and deleted records. They are differentiated by checking position 05 (Record Status) of a record's leader.

The latest version of these files can be downloaded without a date using the following names: LCDGTvocab.mrc.zip and LCDGTvocab.updates.mrc.zip, respectively.

Institutions that wish to automate the downloading of these files can do so without parsing the page you are currently reading. This is done by sending an HTTP HEAD request to determine the date this page was last updated and either using that date to create a file name to request via HTTP GET or using the date-less version of the file names.


Full Export Files

LCDGTvocab.mrc.zip

LCDGTvocab_180131.mrc.zip

LCDGTvocab_180106.mrc.zip

LCDGTvocab_170920.mrc.zip

LCDGTvocab_170815.mrc.zip

LCDGTvocab_170714.mrc.zip

LCDGTvocab_170609.mrc.zip

LCDGTvocab_170415.mrc.zip

LCDGTvocab_170307.mrc.zip

LCDGTvocab_170201.mrc.zip

LCDGTvocab_170110.mrc.zip

LCDGTvocab_161214.mrc.zip

LCDGTvocab_161110.mrc.zip

LCDGTvocab_161019.mrc.zip

LCDGTvocab_160812.mrc.zip

LCDGTvocab_160714.mrc.zip

LCDGTvocab_160603.mrc.zip

LCDGTvocab_160511.mrc.zip

LCDGTvocab_160413.mrc.zip

LCDGTvocab_160214.mrc.zip

LCDGTvocab_160126.mrc.zip

LCDGTvocab_160107.mrc.zip

LCDGTvocab_151029.mrc.zip

LCDGTvocab_150929.mrc.zip

LCDGTvocab_150813.mrc.zip

LCDGTvocab_150727.mrc.zip


Update Files

LCDGTvocab.updates.mrc.zip

LCDGTvocab.updates_180131.mrc.zip

LCDGTvocab.updates_180106.mrc.zip

LCDGTvocab.updates_170920.mrc.zip

LCDGTvocab.updates_170815.mrc.zip

LCDGTvocab.updates_170714.mrc.zip

LCDGTvocab.updates_170609.mrc.zip

LCDGTvocab.updates_170415.mrc.zip

LCDGTvocab.updates_170307.mrc.zip

LCDGTvocab.updates_170201.mrc.zip

LCDGTvocab.updates_170110.mrc.zip

LCDGTvocab.updates_161214.mrc.zip

LCDGTvocab.updates_161110.mrc.zip

LCDGTvocab.updates_161019.mrc.zip

LCDGTvocab.updates_160812.mrc.zip

LCDGTvocab.updates_160714.mrc.zip

LCDGTvocab.updates_160603.mrc.zip

LCDGTvocab.updates_160511.mrc.zip

LCDGTvocab.updates_160413.mrc.zip

LCDGTvocab.updates_160214.mrc.zip

LCDGTvocab.updates_160126.mrc.zip

LCDGTvocab.updates_160107.mrc.zip

LCDGTvocab.updates_151029.mrc.zip

LCDGTvocab.updates_150929.mrc.zip

LCDGTvocab.updates_150813.mrc.zip