Last revised: August 2006

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?

• 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.

return to top

Reading call numbers

1. Search the libraries' Catalog for a book or other material.
   
   
   
   Pay attention! Is it in the STACKS? FOLIO? MICROFILM? Which library has the material?



2. Write down the entire call number: DS63.2.U5 T459 2002
   
   

   DS	DS comes between DR and DT
   63.2	63.2 comes after 63.1 but before 150.1 (read as a whole number).
   U5T459	U5T459 comes after U2T459 (read as a decimal).




3. 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.
   
   

return to top

Brief Overview: Library of Congress Classification System

For more extensive detail, review the Library of Congress Classification Outline.

return to top