Detail map of Washington, District of Columbia, United States Overview map of Washington, District of Columbia, United States

A: Washington, District of Columbia, United States

Herbert Putnam & Charles Cutter Develop the Library of Congress Classification

1897

In 1897, before he was appointed Librarian of Congress, Herbert Putnam, with the assistance of Charles Ammi Cutter, developed the Library of Congress Classification (LCC). This and the Dewey Decimal Classification became the most widely used systems of library classification.

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