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How to Read Library of Congress Call Numbers: The Benefit of Call Numbers

Order of Call Numbers on the Shelf

Because books are classified by subject, you can often find several helpful books on the same shelf, or nearby. For example, within the same call number LB2395, there are other guides for college study.

Here is a list of call numbers, with explanations of how they were put in order:

  1. LA2301 .M37
  2. LB2327 .M3 (LB comes after LA)
  3. LB2328 .B37 (2328 comes after 2327)
  4. LB2328 .C34 (C comes after B)
  5. LB2395 .B35 2009 (2395 comes after 2328)
  6. LB2395 .B87 2003 (Both start with LB2395 .B, decimal .87 comes after .35)
  7. LB2395 .C45 2007 (C comes after B)
  8. LB2395 .D739 2010 (D comes after C)

Here is how they would look on the shelf. You will notice that the LB2395 books all deal with similar subject content.