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About the Archived Library of Congress Classification PDF Files

These earlier editions of Library of Congress Classification (LCC) are available for research purposes only. These editions may contain obsolete or superseded data and should not be used for current cataloging.

• 6th Free Edition (2020)
• 5th Free Edition (2019)
• 4th Free Edition (2018)
• 3rd Free Edition (2017)
• 2nd Free Edition (2015)
• 1st Free Edition (2007-2012)