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Last revised: April 2009
Call Numbers: Finding Library Items
SCOPE: This guide will show you how to read call numbers, so you will be able to find materials in the University of Maryland Libraries. Contact libues[at]umd.edu for more information.
What are call numbers?
Reading call numbers
Brief Overview: Library of Congress
Classification System
What are call numbers?
- Each library item (book, video, DVD) has its own unique identifying number, or call number. This number reflects the subject of the item.
- At the University of Maryland, call numbers are derived from the Library of Congress (LC) Classification Scheme.
- A call number is like an address that gives the location where the item can be found in the library.
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Reading call numbers
- Search the libraries' Catalog for a book or other material.
Pay attention! Is it in the STACKS? FOLIO? MICROFILM? Which library has the material?
- Write down the entire call number: QC981.8.C5 T53 2006
| DS | QC comes between QB and QD |
| 981.8 |
981.8 comes after 981.7 but before 989.5 (read as a whole number). |
| C5 T53 2006 |
C5 T53 2006 comes after C2T459 (read as a decimal). |
- Use the McKeldin Library Floor Plan (pick on up at McKeldin's 1st floor Information Desk) to locate the area where the item is shelved. If the material is in a different library on the College Park campus, consult the appropriate floor plan.
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Brief Overview: Library of Congress Classification System
For more extensive detail, review the Library of Congress Classification Outline.
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