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University of Oregon
UO Libraries

​Getting Started with Research

A guide to help with the essentials of library research

LC Subject Classification

Library of Congress Classification Subject Areas

Please note, some of the UO Libraries' materials may be located in branch libraries or special locations within Knight Library.

Letter Subject Area
A General Works
B Philosophy, Psychology, Religion
C Auxiliary Sciences of History
D World History
E History of the Americas
F History of the Americas
G Geography, Anthropology, Recreation
H Social Sciences
J Political Science
K Law
L Education
M Music
N Fine Arts
P Language and Literature
Q Science
R Medicine
S Agriculture
T Technology
U Military Science
V Naval Science
Z Bibliography, Library Science, Information Resources

To drill down into the LC Classification Outline, use the link below:

UO LibrarySearch - Find articles, books, and more

LibrarySearch offers a streamlined interface for finding books and other media that combines the collections of UO Libraries and Summit libraries.

Finding Books

UO Libraries

LibrarySearch allows you to search for materials in UO Libraries and beyond. You can search by keyword, title, author, or subject. You can limit your search to books, journals, AV materials, maps, and other formats.

Every item has a call number and location.

Knight Library call numbers and locations [maps]:

A-HB ........

2nd floor

HC-PG .....

3rd floor

PH-Z ........

4th floor

Other UO Libraries:

Books, videos, and other materials in library catalogs are assigned official subject headings by the Library of Congress. These subject headings describe an item's content and what it is about, and are useful for focusing research on broader, narrower, or related topics. Look for subject heading links in the library catalog to find more items on the same topic.

For example, the book Dance and the Hollywood Latina has the following LC Subject Headings to describe it:

Subdivisions, or subheadings, are words or phrases which may be added to a subject heading to create a more effective search. Some standard subheadings are:

Abstracts Encyclopedias Research
Bibliography Fiction Sex differences
Biography Handbooks, manuals, etc Social aspects
Case studies History Social life and customs
Diaries In literature Study and teaching
Dictionaries Law and legislation Statistics
Directories Pictorial works
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How to read an LC Call Number

Library of Congress (LC) Call Numbers are like an item's address to help you find where it lives on the shelf. Each letter stands for an academic discipline. In the image below, L is for Education, LD is for Individual Institutions - United States. Can you guess which institution is at LD 4363 .U55 2006

Photo of UO Libraries books on shelf

To read a call number, read the number from left to right or top to bottom as follows:

  1. Alphabetically (L before LC, LC before LD)
  2. Numerically (4362.3 before 4363
  3. Alphabetically (.A before .B
  4. Decimal order (.U2 before .U5 or .U55
  5. (Sometimes there are more pieces following the alphabetical then numerical order here)
  6. Finally, chronologically (1985 before 2006) This is year of publication and may or may not be included.

Lastly, the shelf is organized from top to bottom in sections, so you'll zig-zag down each section to look for your call number before moving to the next section. 

University of Oregon Libraries
1501 Kincaid Street Eugene, OR
97403-1299
T: (541) 346-3053
F: (541) 346-3485
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