Library of Congress Classification System

Library of Congress Classification System**

A: General Works
AE: Encyclopedias
AI: Indexes
AM: Museums
AP: Periodicals
AS: Academies and learned societies
AY: Yearbooks, almanacs, directories
B: Philosophy, Psychology, Religion
B: History & systems of philosophy
BC: Logic
BD: Speculative philosophy
BF: Psychology
BH: Aesthetics
BJ: Ethics
BL: Religions, mythology, rationalism
BM: Judaism
BP: Islam, Bahaism, Theosophy
BR: Christianity (General)
BS: The Bible
BT: Doctrinal theology
BV: Practical theology
BX: Denominations and sects
C: Auxiliary Sciences of History
CB: History of civilization & culture
CC: Archaeology (General)
CD: Diplomatics, archives, seals
CE: Chronology
CJ: Numismatics
CN: Epigraphy
CR: Heraldry
CS: Genealogy
CT: Biography (General)
D: History - General & Eastern
D: History (General)
DA: Great Britain
DB: Austria, Czechoslovakia, Hungary
DC: France
DD: Germany
DE: Mediterranean, Greco-Roman world
DF: Greece
DG: Italy
DH - DJ: Netherlands, Belgium, Luxembourg
DK: Russia
DL: Northern Europe
DP: Spain, Portugal
DQ: Switzerland
DR: Eastern Europe; Turkey
DS: Asia
DS520-DS689: Southeast Asia
DT: Africa
DU: Oceania, Australia, New Zealand
DX: Gypsies
E & F: History - Western Hemisphere
E: America (General),United States
F1-975: United States local history
F1001-1140: Canada
F1201-1392: Mexico
F1401-3799: Central and South America, the Caribbean area
G: Geography, Anthropology, Recreation
G: Atlases, Globes, Maps
GA: Mathematical geography, cartography
GB: Physical geography
GC: Oceanography
GF: Human ecology
GN: Anthropology
GR: Folklore
GT: Manners and customs
GV: Sports and recreation
GV1580-GV1799: Dance
H: Social Sciences and Business
H: Social sciences (General)
HA: Statistics
HB: Economic theory
HC: Economic history and conditions
HD: Land, agriculture, industry
HE: Transportation and communication
HF: Commerce
HG: Finance
HJ: Public finance
HM: Sociology
HN: Social history
HQ: Social groups; the family, marriage, women
HS: Societies and clubs
HS: Societies and clubs
HS: Societies and clubs
HV: Social pathology, criminology, welfare
HX: Socialism, communism, anarchism
J: Political Science
J: Official documents
JA: Collections and general works
JC: Political theory
JF: Constitutional history and administration
JK: U.S. constitutional history
JS: Local government
JV: Colonization, emigration and immigration
JX: International law, international relations
K: Law
K: Law (General)
KD: Law of the United Kingdom and Ireland
KE: Law of Canada
KF: Law of the United States
KFN: Individual states
KG: Law of Latin America, Mexico and Central America (General)
KH: Law of South America (General)
KJ: Law of Europe
L: Education
L: Education (General)
LA: History of education
LB: Theory and practice
LC: Special aspects
LD: Individual U.S. institutions
LH: College and school publications
LJ: Student fraternities and societies
LT: Textbooks (General)
M: Music
M: Music (General)
ML: Literature of music
MT: Music instruction and study
N: Fine Arts
N: Visual arts (General)
NA: Architecture
NB: Sculpture
NC: Drawing, design, illustration
ND: Painting
NE: Print media
NK: Decorative arts, applied art
NX: Arts in general
P: Language and Literature
P: Linguistics
PA: Greek and Latin
PB: Modern European languages; Celtic languages
PC: Romance languages
PD: Old Germanic and Scandinavian languages
PE: English language
PF: Dutch, Flemish, German languages
PG: Slavic languages and literature
PH: Finno-Ugrian and Basque languages and literature
PJ: Middle Eastern languages and literature
PK: Indo-Iranian languages and literature
PL: East Asian, African, and Oceanic languages and literature
PM: American Indian; artificial languages
PN: Literature; literary history and collections
PN1993-PN1996: Motion Pictures
PQ: Romance literature
PR: English Literature
PS: American literature
PT: Germanic literature
PZ: Children's literature
Q: Science
Q Science (General)
QA: Mathematics
QB: Astronomy
QC: Physics
QD: Chemistry
QE: Geology
QH: Natural history (General)
QK: Botany
QL: Zoology
QM: Human anatomy
QP: Physiology
QR: Microbiology
R: Medicine
R: Medicine (General)
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; pharmacology
RS: Pharmacy and materia medica
RT: Nursing
RX: Homeopathy
RZ: Other systems of medicine
S: Agriculture
S: Agriculture (General)
SB: Plant culture
SD: Forestry
SF: Animal culture
SH: Aquaculture, fisheries, fishing
SK: Hunting
T: Technology
T: Technology (General)
TA: Engineering (General)
TC: Hydraulic engineering
TD: Environmental technology
TE: Highway engineering
TF: Railroad engineering
TG: Bridge engineering
TH: Building construction
TJ: Mechanical engineering and machinery
TK: Electrical engineering; electronics
TL: Motor vehicles; aeronautics; astronautics
TN: Mining engineering; metallurgy
TP: Chemical technology
TR: Photography
TS: Manufactures
TT: Handicrafts; arts and crafts
TX: Home economics; cooking
U: Military Science
UA: Armies
UB: Military administration
UC: Maintenance and transportation
UD: Infantry
UE: Cavalry. Armored and mechanized cavalry
UF: Artillery
UG: Military engineering
UH: Other services
V: Naval Science
VA: Navies
VB: Naval administration
VC: Naval maintenance
VD: Naval seamen
VE: Marines
VF: Naval ordnance
VG: Minor services of navies
VK: Navigation. Merchant marine
VM: Naval architecture. Shipbuilding. Marine engineering
Z: Library Science

** The Library of Congress Classification (LCC) is a classification system that was first developed in the late nineteenth and early twentieth centuries to organize and arrange the book collections of the Library of Congress. Over the course of the twentieth century, the system was adopted for use by other libraries as well, especially large academic libraries.

The system divides all knowledge into twenty-one basic classes, each identified by a single letter of the alphabet. Most of these alphabetical classes are further divided into more specific subclasses, identified by two-letter, or occasionally three-letter, combinations.

For more information on the Library of Congress Classification, please go to