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Library of Congress Classification System
The Library of Congress
World’s largest libraryBuilt from Thomas Jefferson’s personal library
(1815) Also home to U.S. Copyright Office
Library of Congress
Classification System
Allows for a logical organization of materials grouped by subjectSimilar to the scientific classification for animals or plants. Or the way groceries
are arranged in a store.
College/ University libraries organize their resources differently
Dewey Decimal SystemK –12 & public libraries
Library of Congress (LC)
• College/ University libraries
WHY LC?
98% of academic libraries in the United States use the Library of Congress (LC) classification scheme; it’s the “national standard”.
Because of the way it is structured, it more easily accommodates scientific and scholarly titles and more nimbly allows for the inclusion of new subjects.
LC makes finer distinctions among disciplines and subjects than Dewey, making it more likely that books on the same or similar topics will be found near each other. This will make it easier for you to find books on your topics.
Dewey Decimal System
000-099 General Knowledge
100-199 Psychology & Philosophy
200-299 Religions & Mythology
300-399 Social Sciences & Folklore
400-499 Languages & Grammar
500-599 Math & Science
600-699 Medicine & Technology
700-799 Arts & Entertainment
800-899 Literature
900-999 History & Geography
Library of Congress Classification
Alpha-Numeric SystemMajor Subject Headings are Alphabetical1st Line of the call number represents
one of the subject divisions of the system
Basic Library of Congress Scheme
Dewey vs. LC
Dewey Decimal System
300s –social sciences
Call number:
363
.70525
FR
Library of Congress System
• GE –environmental sciences
Call number:
GE
197
.F75
2008
Reading the LC Call Number
Reading the LC Call Number
Reading the LC Call Number
How to Find a Call NumberRead left to right, top to bottom
How to Find a Call NumberRead left to right, top to bottom
K
58
M35X
1999
KF
49
C65
1998
KF
14
D55
X
KF
14.15
C35X
A2
KFK
1230
D12
2001
KFK
1230
D8
1994
49 may come before 58 BUT K comes before KF
C may come before D BUT 14 comes before 14.15
1994 may come before 2001 BUT .12 comes before .80
F26M36 P142004
Which one comes first?
F264L14S222001
Example 1 Example 2
ML3534.P371987
ML 3534 .F6 1986
Which one comes first?
Example 1 Example 2
Which one comes first?
TG25N53S51983
TG25N53M321982
Example 1 Example 2
Which one comes first?
PS3511.19 Z86.34
PS3511.19Z86.112
Example 1 Example 2
Location Designations
Location Designations
How are books in college and university libraries organized?
BY SUBJECT, USING THE
LIBRARY OF CONGRESS
CLASSIFICATION SYSTEM
Key point: