Answered By: Chris Clouser
Last Updated: Aug 26, 2019     Views: 51

The number that you have there is a Dewey Decimal Classification number. The IUP Libraries has a small collection of older materials that still use these numbers. That collection can be found on the 3rd floor of Stapleton Library in the northwest corner (behind the elevator). There are two major call number systems used by libraries in the U.S. The ones beginning with letters are known as the Library of Congress system (based on the Library of Congress in Washington). Most colleges and universities use this type. The other type, the Dewey Decimial system which has three digits followed by a decimal point and more digits, is used primarily by school and public libraries. Up until 2000, IUP used the Dewey Decimal system. In 2000 we did a project to convert the whole collection to Library of Congress numbers. We converted over half a million books, but there were some that we were not able to do automatically. These still have the Dewey numbers and are housed on the 3rd floor.

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