Minneapolis Public Library - Cataloging

Cataloging

Unusual for a public library, MPL used the Library of Congress Classification. Prior to 1969 it used the Dewey Decimal System, although around 1890, the library switched to the early and short-lived Putnam classification system, developed by Minneapolis Librarian, Herbert Putnam. He later became Librarian of Congress, and revised his Putnam system into the current Library of Congress methodology.