Answered By: Robert Fitzpatrick
Last Updated: Nov 12, 2014     Views: 53

Call Numbers in the Library of Congress system

Every book, CD, and DVD in the library has a call number, which is used to locate that item on the shelf: 

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The letter(s) at the beginning of a call number tell you what it's about:

A · General Information
  • General Information
  • Encyclopedias
  • Dictionaries
  • Almanacs
B · Philosophy, Psychology, Religion
  • B-BD Philosophy
  • BF Psychology
  • BL-BX Religion
C · Auxiliary Sciences of History
  • CC Archaeology
  • CR Heraldry
  • CS Genealogy
  • CT General Biography
D · History: General and Old World
  • D - History (General)
  • DA - Great Britain
  • DAW - Central Europe
  • DB - Austria - Liechtenstein - Hungary - Czechoslovakia
  • DC - France - Andorra - Monaco
  • DD - Germany
  • DE - Greco-Roman World
  • DF - Greece
  • DG - Italy - Malta
  • DH - Low Countries - Benelux Countries
  • DJ - Netherlands (Holland)
  • DJK - Eastern Europe (General)
  • DK - Russia. Soviet Union. Former Soviet Republics - Poland
  • DL - Northern Europe. Scandinavia
  • DP - Spain - Portugal
  • DQ - Switzerland
  • DR - Balkan Peninsula
  • DS - Asia
  • DT - Africa
  • DU - Oceania (South Seas)
  • DX - Gypsies
E · History: United States: General
  • E11-E143: U.S. pre-Columbian, Native American tribes and wars
  • E151-E975: U.S. Colonial history, American Revolution, up to the present
F · History: States of the U.S.; Canada; Latin America
  • F1 - F975: State & Local history of the U.S.
  • F1001 - F1145.2: Canada, Latin America, and other former European colonies
G · Geography, Anthropology, Sports, & Recreation     (Hint: GV · Skiing)
  • G-GB Geography
  • GN Anthropology
  • GR Folklore
  • GV Recreation, Sports, and Dance
H · Social Sciences
  • HA Statistics
  • HB-HJ Business and Economics
  • HM-HX Sociology: Family; Race; Criminology Substance Abuse, etc.
J · Political Science
  • JK Political Science in the United States
K · Law
  • KF Law in the United States
  • KFN Law in New Hampshire
L · Education
  • LB - Theory and Practice
  • LD - Individual institutions in the U.S.
  • LT - Textbooks
M · Music
  • M - Music
  • ML - Literature about music
  • MT - Instruction and study
N · Fine Arts
  • NA Architecture
  • NB Sculpture
  • ND Painting
  • NK Decorative Arts: Pottery, Antiques, Costume
P · Language and Literature
  • P-PA Linguistics; Classical Languages and Literatures
  • PC French Language, Spanish Language
  • PE English Language
  • PF German Language
  • PN General Literature (Perf. Arts, Drama, Film, Theater)
  • PQ French Literature; Spanish Literature
  • PR English Literature
  • PS American Literature
  • PT German Literature
Q · Science     (Hint: QC · Meteorology)
  • QA Mathematics & Computer Science
  • QD Chemistry
  • QH-QR Natural History; Life Sciences
R · Medicine
  • RD - Surgery
  • RJ - Pediatrics
  • RT - Nursing
S · Agriculture
  • SB - Plant culture
  • SD - Forestry
  • SH - Aquaculture
T · Technology     (Hint: TR · Photography)
  • TA-TK Engineering
  • TX Home Economics (Yay 1950s!)
U · Military Science
  • UA - Armies
  • UB - Adminitration
  • UG - Military Engineering
V · Naval Science
  • VD - Naval seamen
  • VE - Marines
  • VM - Architecture and shipbuilding
Z · Bibliography; Library Science
  • Z - About books, bookmaking, the publishing industry, about libraries, and bibliography
  • ZA - About various information formats and media (Internet, pictures, audio, motion pictures, etc.)