Library of Congress Classification

Broad categories for arranging print materials by the Library of Congress classification system

Library of Congress Subject Classification

The UTSA Libraries use the Library of Congress call letter/number system for organizing its print collections. The first letters classify material by broad subjects putting books on similar topics together. 

initially designed at the beginning of the 20th century for the collection of the Library of Congress it divides all knowledge into 21 basic classes, each beginning with a single letter of the alphabet.

Dewey Decimal, another classification system, is used mostly by public libraries. 

A: General Works.

AE: Encyclopedias
AG: Dictionaries
AI: General Indexes
AM: Museums, Collecting
AY: Almanacs and Directories

B: Philosophy. Psychology. Religion.

B-BD: Philosophy
BF: Psychology
BL: Religion
BM: Judaism
BP: Islam
BQ: Buddhism
BR: Christianity
BS: The Bible

C: Archaeology. Heraldry. Biography.

CB History of Civilization
CC: Archaeology
CS: Genealogy
CT: General Biography

D: History: Old World & General.

DA: Great Britain
DB: Austria. Czechoslovakia. Hungary.
DC: France
DD: Germany
DE: Greco-Roman World
DF: Greece
DG: Italy
DH-DJ: Netherlands
DK: Russia. Poland. Finland.
DL: Scandinavia
DP: Spain. Portugal.
DQ: Switzerland
DR: Eastern Europe
DS: Asia
DT: Africa
DU: Oceania. Australia
DX: Gypsies

E: History: United States.

E 11-29: America (general)
E 31-45: North America (general)
E 51-99: Indians of North America
E 101-135: Discovery of America
E 151-184: United States: general history
E 185: African Americans in the United States
E 186-199: Colonial period
E 201-298: Revolution
E 351-364: War of 1812
E 401-415: War with Mexico
E 441-453: Slavery
E 456-655: Civil War
E 714-735: War with Spain (1898)
     World War I: (see D501-680)
     World War II: (see D731-838)
E 740: Twentieth century

F: History: United States Local History. Canada. Mexico. South America.

F 1-970: United States (individual states)
F 1001-1140: Canada
F 1201-1392: Mexico
F 1401-3799: Latin America

G: Geography. Anthropology. Recreation.

G: Geography (General); maps; atlases
GA: Cartography (map making)
GC: Oceanography
GE: Environmental Science
GN: Anthropology
GR: Folklore
GV: Sports and Recreation

H: Social Sciences.

HA: Statistics
HB: Economic Theory, Demography
HC: Economic History by Region
HD: Industries, Land Use, Labor
HE: Transportation and Communications
HF: Business, Commerce
HJ: Public Finance
HG: Finance
HM: Sociology
HQ: Women's Studies, Social Groups
HT: Class, Race
HV: Social and Public Welfare, Criminology
HV 2475: American Sign Language
HX: Socialism, Communism, Anarchism

J: Political Theory. Government.

JC: Political Theory
JF: Constitutional History and Administration
JS: Local Government
JV: Colonies and Colonization, Emigration and Immigration, Migration
JZ: International Relations

K: Law: National. International.

K: General works
KBM: Jewish Law
KBP: Islamic Law
KD: United Kingdom. Ireland.
KE: Canada
KF: United States (general)
KFA-KFZ: United States (by state, etc.)
KG: Latin America 
KH: South America

L: Education Theory and Training. Special Education. Adult Education.

LA: History of Education
LB: Theory and Practice of Education
LD: United States Universities & Colleges

M: Music.

M: Music Scores
ML: Music Literature
MT: Music Theory & Pedagogy

N: Fine Art. World Masters. Architecture. Lettering. Interior Decorating.

N  : Visual Arts
NA: Architecture
NB: Sculpture
NC: Drawing, Design, Illustration
ND: Painting
NE: Print Media
NK: Decorative Arts
NX: Arts in General

P: Classical Literature. Poetry. Fiction. Study of Language.

P: Philology and Linguistics
PA: Greek Language and Literature
PC: Romance Languages
PD: Germanic, Scandinavian
PE: English
PF: West Germanic 
PG: Slavic, Baltic, Albanian, Polish, Ukrainian 
PH: Uralic, Basque, Finnish, Hungarian
PJ: Oriental Languages and Literatures
       PJ 4501 - 5192 Hebrew
       PJ 5201 - 5329.5 Aramaic
       PJ 6001 - 8517 Arabic
PK: Indo-Iranian Languages and Literatures
PL: Languages and Literatures of Eastern Asia, Africa, Oceania
       PL 501 - 899 Japanese Language and Literature
       PL 901 - 998 Korean Language and Literature
       PL 1001 - 3208 Chinese Language and Literature
PM: American Indian Languages, Esperanto
PN: Literature (general)
PQ: Romance Literature
PQ 1-PQ3999: French
PQ 4001-PQ5999: Italian
PQ 6001-PQ8929: Spanish
PQ 9000-PQ9999: Portuguese
PR: English Literature
PS: American Literature
PT: Germanic Literature
PZ: Juvenile Literature

Q: Science.

QA: Mathematics
QB: Astronomy
QC: Physics
QD: Chemistry
QE: Geology
QH: Biology, Natural History
QK: Botany
QL: Zoology
QM: Human Anatomy
QP: Physiology
QR: Microbiology

R: Medicine. Dentistry. Nursing. Geriatrics.

RA: Public Aspects of Medicine
RB: Pathology
RC: Internal Medicine
RD: Surgery
RE: Ophthalmology
RF: Otorhinolaryngology
RG: Gynecology and Obstetrics
RJ: Pediatrics
RK: Dentistry
RL: Dermatology
RM: Therapeutics, Pharamacology
RS: Pharmacy & Materia Medica
RT: Nursing
RV: Botanic, Thomasonian, and Eclectic Medicine
RX: Homeopathy
RZ: Other Systems of Medicine

S: Agriculture. Forestry. Fishing. Animal Care and Breeding.

S:    Agriculture (general)
SB:  Plant Culture
SD:  Forestry
SF:   Animal Culture
SH:  Aquaculture, Fisheries
SK:  Hunting Sports

T: Engineering. Photography. Handicrafts. Cooking.

T: Technology
TA: Engineering- Civil & General
TC: Engineering- Hydraulic & Ocean
TD: Environment Technology, Sanitary Engineering
TE: Highway Engineering, Roads and Pavement
TF: Railroad Engineering and Operation
TG: Bridge Engineering
TH: Building Construction
TJ: Mechanical Engineering and Machinery
TK: Electrical Engineering, Electronics, Nuclear Engineering
TL: Motor Vehicles, Aeronautics, Astronautics
TN: Mining Engineering, Metallurgy
TP: Chemical Technology
TR: Photography
TS: Manufactures
TT: Handicrafts, Arts & Crafts
TX: Home Economics

U: Military Science.

For Military History See: D - F

V: Naval Science.

For Naval History see: D - F

Z: Bibliography. Library Science.

Z:    Libraries, Writing, Paleography, Book Industries and Trade, Bibliographies
ZA:  Information Resources (general)
ZA 5049 - 5190  Government Information