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Learning About the Library

Information and videos about the library's services and resources, as well as quick research tips

Library of Congress Call Numbers

Books are arranged on the library's shelves by Library of Congress Classification. This is a system which organizes materials by general subjects. Once you have a call number from searching the library catalog, see the guide to call number locations at Mudd and the library floor maps to find out where a book might be on the shelves.

Call Number Locations

Call No. Letter & General Subject
Call No. Letters & Selected Specific Subjects
Location in the Mudd Library
A -- General Works AE   General encyclopedias
AY   Almanacs, directories
Fourth Floor (map)
B -- Philosophy, Psychology, and Religion B   Philosophy (general)
BF   Psychology
BL-BX   Religion
BM   Judaism
BP   Islam
BR   Christianity
BS   Bible
BX   Denominations and sects
Third Floor (map)
C -- Auxiliary Sciences of History CB   History of civilization
CS   Genealogy
CT   General biography
Fourth Floor (map)
D -- History (General and World) D   World history
DA   Great Britain
DC   France
DD   Germany
DK   Russia and the former Soviet Union
DP   Spain
DS   Asia
DT   Africa
Fourth Floor (map)
E -- History of the Americas E   America, Pre-Columbian America, elements in the population, United States history Fourth Floor (map)
F -- History of the Americas F   United States local history, Canadian history, Latin America, South America Fourth Floor (map)
G -- Geography, Anthropology, Recreation G   geography (general)
GB   Physical geography
GE   Environmental Sciences
GN   Anthropology
GR   Folklore
GV   Recreation
Fourth Floor (map)
H -- Social Sciences HA   Statistics
HB-HJ   Economics
HM   Sociology
HQ   Gender studies
Fourth Floor (map)
J -- Political Science JA-JC   Political science
JF-JN   Political institutions and public administration
JS   Local government
JV   Colonies and colonization
JX   International law
JZ   International relations
Fourth Floor (map)
K -- Law K   Law in general
KB   Religious law in general
KD-KWX   Laws of individual countries and regions
KZ   Law of nations
Fourth Floor (map)
L -- Education L   Education (general)
LB   Theory and practice of education
LC   Special aspects of education
LD-LG   Individual institutions by location
LH   College and school magazines and papers
LJ   Student fraternities and societies
Fourth Floor (map)
M -- Music and Books on Music M   Scores Media Center (map)
ML   Literature of music
MT   Musical instruction and study
Third Floor (map)
N -- Fine Arts NA   Architecture
NB   Sculpture
NC   Drawing, design
ND   Painting
NE   Print media
NK   Decorative arts
NX   Arts in general
Third Floor (map)
P -- Language and Literature P   Philology and linguistics
PA   Greek and Latin language and literature
PC   Romance languages
PD   Germanic and Scandinavian languages
PE   English language
PG   Slavic languages
PJ   Eastern languages and literatures
PL   Languages and literatures of East Asia, Africa, Oceania
PN   Literature in general, including poetry, drama, and film
PQ   Romance literature
PR   English literature
PS   American literature
PT   Germanic literature
PZ   Juvenile literature
Third Floor (map)
Q -- Science QA   Mathematics
QB   Astronomy
QC   Physics
QD   Chemistry
QE   Geology
QH   Natural history
QK   Botany
QL   Zoology
QP   Physiology
QM   Human anatomy
QR   Microbiology
Third Floor (map)
R -- Medicine R   Medicine (general)
RA   Public aspects of medicine
RB-RZ   Branches of medicine
Third Floor (map)
S -- Agriculture S   Agriculture (general)
SB   Plant culture
SD   Forestry
SF   Animal culture
SH   Aquaculture, fisheries
SK   Hunting sports
Third Floor (map)
T -- Technology TA-TK   Engineering by category
TL   Motor vehicles, aeronautics, astronautics
TR   Photography
TS   Arts and crafts, handicrafts
TX   Home economics, cookery
Third Floor (map)
U -- Military Science UA   Armies
UB   Military administration
UG   Military engineering
Third Floor (map)
V -- Naval Science VA   Navies
VB   Naval administration
VK   Navigation, merchant marine
VM   Naval architecture, shipbuilding
Third Floor (map)
Z -- Bibliography, Library Science, Information Resources Z   Books, writing, paleography, libraries, bibliography
ZA   Information resources
Fourth Floor (map)

Want to learn more?

You can find out more about the library building by looking at our Spaces in the Library pages, or even taking a virtual tour.