2. The Library of Congress
World’s largest library
Built from Thomas Jefferson’s personal library
(1815)
Also home to U.S. Copyright Office
Library of Congress
3. Classification System
Allows for a logical organization of materials grouped by
subject
Similar to the scientific classification for animals or plants.
Or the way groceries
are arranged in a store.
4. College/ University libraries
organize their resources differently
Dewey Decimal System
K –12 & public libraries
Library of Congress (LC)
• College/ University
libraries
5. 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.
6. 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
7. Library of Congress Classification
Alpha-Numeric System
Major Subject Headings are Alphabetical
1st
Line of the call number represents
one of the subject divisions of the system
9. 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
13. How to Find a Call Number
Read left to right, top to bottom
14. How to Find a Call Number
Read 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
23. How are books in college and
university libraries organized?
BY SUBJECT, USING THE
LIBRARY OF CONGRESS
CLASSIFICATION SYSTEM
Key point:
Editor's Notes
Although contemporary libraries increasingly provide access to collections electronically, physical collections still serve an integral function in the library. A great deal of authoritative, reliable, and relevant information is not yet available online. Thus, it is important to understand how a library’s physical collection is organized.