Library of Congress Classification Outline

AC -- - Collections. Series. Collected works
AE -- Encyclopedias
AG -- Dictionaries and other general reference works
AI -- Indexes
AM -- Museums. Collectors and collecting
AN -- Newspapers
AP -- Periodicals
AS -- Academies and learned societies
AY -- Yearbooks. Almanacs. Directories
AZ -- History of scholarship and learning. The humanities

B -- PHILOSOPHY. PSYCHOLOGY. RELIGION (~121Kb)

B -- Philosophy (General)
BC -- Logic
BD -- Speculative philosophy
BF -- Psychology
BH -- Aesthetics
BJ -- Ethics
BL -- Religions. Mythology. Rationalism
BM -- Judaism
BP -- Islam. Bahaism. Theosophy, etc.
BQ -- Buddhism
BR -- Christianity
BS -- The Bible
BT -- Doctrinal Theology
BV -- Practical Theology
BX -- Christian Denominations

C -- AUXILIARY SCIENCES OF HISTORY (~75Kb)

C -- Auxiliary Sciences of History (General)
CB -- History of Civilization
CC -- Archaeology
CD -- Diplomatics. Archives. Seals
CE -- Technical Chronology. Calendar
CJ -- Numismatics
CN -- Inscriptions. Epigraphy
CR -- Heraldry
CS -- Genealogy
CT -- Biography

D -- HISTORY (GENERAL) AND HISTORY OF EUROPE (~163Kb)

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 and F -- HISTORY: AMERICA (~121Kb)

E
11-143 -- America
151-889 -- United States

F
1-975 -- United States local history
1001-1145.2 -- British America (including Canada), Dutch America
1170 -- French America
1201-3799 -- Latin America. Spanish America

G -- GEOGRAPHY. ANTHROPOLOGY. RECREATION (~91Kb)

G -- Geography (General). Atlases. Maps
GA -- Mathematical geography. Cartography
GB -- Physical geography
GC -- Oceanography
GE -- Environmental Sciences
GF -- Human ecology. Anthropogeography
GN -- Anthropology
GR -- Folklore
GT -- Manners and customs (General)
GV -- Recreation. Leisure

H -- SOCIAL SCIENCES (~131Kb)

H -- Social sciences (General)
HA -- Statistics
HB -- Economic theory. Demography
HC -- Economic history and conditions
HD -- Industries. Land use. Labor
HE -- Transportation and communications
HF -- Commerce
HG -- Finance
HJ -- Public finance
HM -- Sociology (General)
HN -- Social history and conditions. Social problems. Social reform
HQ -- The family. Marriage. Women
HS -- Societies: secret, benevolent, etc.
HT -- Communities. Classes. Races
HV -- Social pathology. Social and public welfare. Criminology
HX -- Socialism. Communism. Anarchism

J -- POLITICAL SCIENCE (~87Kb)

J -- General legislative and executive papers
JA -- Political science (General)
JC -- Political theory
JF -- Political institutions and public administration - General
JJ -- Political institutions and public administration - North America
JK -- Political institutions and public administration - United States
JL -- Political institutions and public administration - Canada, West Indies, Mexico, Central and South America
JN -- Political institutions and public administration - Europe
JQ -- Political institutions and public administration - Asia, Arab countries, Islamic countries, Africa, Atlantic Ocean islands, Australia, New Zealand, Pacific Ocean islands
JS -- Local government. Municipal government
JV -- Colonies and colonization. Emigration and immigration. International migration
JX -- International law, see KZ (obsolete)
JZ -- International relations

K -- LAW (~255Kb)

K -- Law in general. Comparative and uniform law. Jurisprudence
KB -- Religious law in general. Comparative religious law. Jurisprudence
KBM -- Jewish law
KBP -- Islamic law
KBR -- History of canon law
KBU -- Law of the Roman Catholic Church. The Holy See
KD-KDK -- United Kingdom and Ireland
KDZ -- America. North America
KE -- Canada
KF -- United States
KG -- Latin America - Mexico and Central America - West Indies. Caribbean area
KH -- South America
KJ-KKZ Europe
KL-KWX -- Asia and Eurasia, Africa, Pacific Area, and Antarctica
KZ -- Law of nations

L -- EDUCATION (~94Kb)

L -- Education (General)
LA -- History of education
LB -- Theory and practice of education
LC -- Special aspects of education
LD -- Individual institutions - United States
LE -- Individual institutions - America (except United States)
LF -- Individual institutions - Europe
LG -- Individual institutions - Asia, Africa, Indian Ocean islands, Australia, New Zealand, Pacific islands
LH -- College and school magazines and papers
LJ -- Student fraternities and societies, United States
LT -- Textbooks

M -- MUSIC AND BOOKS ON MUSIC (~69Kb)

M -- Music
ML -- Literature on music
MT -- Musical instruction and study

N -- FINE ARTS (~76Kb)

N -- Visual arts
NA -- Architecture
NB -- Sculpture
NC -- Drawing. Design. Illustration
ND -- Painting
NE -- Print media
NK -- Decorative arts
NX -- Arts in general

P -- LANGUAGE AND LITERATURE (~245Kb)

P -- Philology. Linguistics
PA -- Greek language and literature. Latin language and literature
PB -- Modern languages. Celtic languages
PC -- Romanic languages
PD -- Germanic languages. Scandinavian languages
PE -- English language
PF -- West Germanic languages
PG -- Slavic languages. Baltic languages. Albanian language
PH -- Uralic languages. Basque language
PJ -- Oriental languages and literatures
PK -- Indo-Iranian languages and literatures
PL -- Languages and literatures of Eastern Asia, Africa, Oceania
PM -- Hyperborean, Indian, and artificial languages
PN -- Literature (General)
PQ -- French literature - Italian literature - Spanish literature - Portuguese literature
PR -- English literature
PS -- American literature
PT -- German literature - Dutch literature - Flemish literature since 1830 - Afrikaans literature - Scandinavian literature - Old Norse literature: Old Icelandic and Old Norwegian - Modern Icelandic literature - Faroese literature - Danish literature - Norwegian literature - Swedish literature
PZ -- Fiction and juvenile belles lettres

Q -- SCIENCE (~80Kb)

Q -- Science (General)
QA -- Mathematics
QB -- Astronomy
QC -- Physics
QD -- Chemistry
QE -- Geology
QH -- Natural history - Biology
QK -- Botany
QL -- Zoology
QM -- Human anatomy
QP -- Physiology
QR -- Microbiology

R -- MEDICINE (~99Kb)

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
RV -- Botanic, Thomsonian, and eclectic medicine
RX -- Homeopathy
RZ -- Other systems of medicine

S -- AGRICULTURE (~79Kb)

S -- Agriculture (General)
SB -- Plant culture
SD -- Forestry
SF -- Animal culture
SH -- Aquaculture. Fisheries. Angling
SK -- Hunting sports

T -- TECHNOLOGY (~98Kb)

T -- Technology (General)
TA -- Engineering (General). Civil engineering
TC -- Hydraulic engineering. Ocean engineering
TD -- Environmental technology. Sanitary engineering
TE -- Highway engineering. Roads and pavements
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 and crafts
TX -- Home economics

U -- MILITARY SCIENCE (~101Kb)

For military history, see D-F --
U -- Military science (General)
UA -- Armies: Organization, distribution, military situation
UB -- Military administration
UC -- Maintenance and transportation
UD -- Infantry
UE -- Cavalry. Armor
UF -- Artillery
UG -- Military engineering. Air forces
UH -- Other services

V -- NAVAL SCIENCE (~76Kb)

V -- Naval science (General)
VA -- Navies: Organization, distribution, naval situation
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 -- BIBLIOGRAPHY. LIBRARY SCIENCE. INFORMATION RESOURCES (GENERAL) (~75Kb)

Z -- Books (General). Writing. Paleography. Book industries and trade. Libraries. Bibliography
ZA -- Information resources (General)