PAID 111 Section 18: R. Christman (Fall 2024)

Call numbers? What are they?

Call numbers are assigned to each book in the library. They...

• Help us find materials
• Group books by subject or topic

Here in Preus (and in most academic libraries) we use the Library of Congress Classification system.

Who came up with this??

• Some old, white men who worked for the government in the late 19th and early 20th centuries

Classes A - L are on the 1st floor of Preus.

Classes M - Z are on the 2nd floor of Preus.

Infographic created by McMaster University Library.