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Book Arrangement at CCL

Library of Congress Classification

The music book collection is arranged by Library of Congress classification. The books are organized into three groups, the main class M and the two subclasses, ML and MT.

  • M - Music
  • ML - Literature on music
  • MT - Instruction and study

More About LoC Classification

In the Library of Congress Classification system, all knowledge is divided into 21 classes, each identified by a single letter of the alphabet (e.g. M for Music). Read more about the LoC Classification system here:

Example of a Music Book Call Number

12 bass arias from the cantatas: an album of flute duets, by Johann Sebastian Bach. Kentfield, CA: Raymond A. Ojeda, 1986.
Call Number:




- refers to the subject, arranged music for wind instruments

- refers to composer's last name, Bach

- refers to year of publication