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Read Call Numbers: Overview

Call numbers are like a book's address

They tell you a bit about the book and where it can be found in the library. Like street signs, call number ranges are listed on each row of books, telling you where to turn and find the book you're looking for.

1st Letters

  • Books are arranged in alphabetical order
  • A single letter comes before double letters
    D DA DB DE

1st Numbers

  • The numbers are in order, from low to high
  • Read the first set of numbers as whole numbers, followed by decimals
    F1 F23 F456 F456.7

2nd Letters

  • The 2nd set of letters come after a decimal point
  • They are arranged in alphabetical order

2nd Numbers

  • Immediately after the letter, there's another number
  • Read them as decimals

3rd Letters & Numbers

  • If there are any more letters and numbers, read these the same way you did for the 2nd set

Year of publication

  • The year it was published is last

Putting it all together

Books with call number labels, listed in order


Library of Congress Classification

A General Works
B Philosophy, Psychology, Religion
C Archaeology, Genealogy, Biography
D History & Ancient History
E-F History of America
G Anthropology, Geography, Folklore
H Social Sciences, Statistics, Business
J Political Science
K Law
L Education
M Music
N Fine Arts
P Languages & Literature
Q Science
R Medicine
S Agriculture
T Technology
U Military Science
V Naval Science
Z Bibliography & Library Science