How do I...
Interpret the call numbers?

The library of Congress M class put all musical materials into 3 categories:

M for printed music

ML for music literature

MT for music instruction and study

If you want to see how these categories are subdivided, look at the M class list
 

How to read a Library of Congress call number :

The first line of the call number is always alphabetical by one, two, or three letters (M, ML, MT, etc.)
The second line is always numerical (1, 2, 3, etc.)
The third line along with a possible fourth line are alphabetical and decimal (.4 is greater than .37; 8 is greater
than .948)
The final line may be a year distinguishing one edition of an item from other editions.

Sample Call Number:

M (alphabetical)

1029 (numerical)

M94 (alphabetical, decimal)

K.386b Catalog number (may or may not be present)

Sample Arrangement of Items on a Shelf:

M1029    M 1029    M1029    M1029

.M94       .M94           .M94       .P46

K386b     K495          .S3

Didn't find your answer here?  Ask the Multimedia Librarian
Comments or suggestions contact: Ericableu L. Bartik, Multimedia Librarian