Accessibility Skip to Global Navigation Skip to Local Navigation Skip to Content Skip to Search Skip to Site Map Menu

Finding a book on a shelf

The Library of Congress (LC) classification system is used by many academic and research libraries around the world. With LC, the call number always starts with a letter (or two), followed by numbers. The letter indicates the subject.

e.g Cen Ref HA 1107.5 EW5

LC_call_number_explained

Reading LC call numbers

Work down line by line, alphabetically then numerically (some numbers may contain a decimal point). In the last line with letters and numbers, the numbers are treated as decimals.

LC_call_number_books

The following is an outline of the LC system:

A
General Works
B
Philosophy, Psychology, Religion
C - F
History
G
Geography, Anthropology
H
Social Sciences
J
Political Science
K
Law
L
Education
M
Music
N
Art and Architecture
P
Language and Literature
Q
Science
R
Medicine
S
Agriculture, Soils
T
Technology
U
Military Science
V
Naval Science
W
Psychology
Z
Bibliography, Library Science

Need assistance?  Library staff can help.  Contact a Subject Librarian.