Library of Congress (LC) Call Numbers

AC - Collections, Series, Collected Works.
AE - Encyclopedias (General). AG Dictionaries and Other General Reference Works.
AI - Indexes (General).
AM - Museums. Collectors and Collecting.
AN - Newspapers.
AP - Periodicals.
AS - Academies and Learned Societies (General).
AY - Yearbooks. Almanacs. Directories.
AZ - History of Scholarship and Learning. The Humanities.

B - Philosophy (General).
BC - Logic.
BD - Speculative Philosophy.
BF - Psychology, Parapsychology, Occult Sciences.
BH - Aesthetics.
BJ - Ethics. Social Usages. Etiquette.
BL - Religion.
BM - Judaism.
BP - Islam, Bahaism, Theosophy.
BQ - Buddhism.
BR - Christianity.
BS - The Bible.
BT - Doctrinal Theology.
BV - Practical Theology.
BX Christian Denominations.

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

D - General World History.
DA - Great Britian.
DAW - Central Europe.
DB - Austria, Hungary, Czech Republic, Slovakia.
DC - France.
DD - Germany.
DE - The Mediterranean Region.
DF - Greece.
DG - Italy.
DH - Belgium, Luxemburg.
DJ - Netherlands (Holland).
DK - Russia and former Soviet Republics.
DL - Northern Europe, Scandinavia.
DP - Spain, Portugal.
DQ - Switzerland.
DR - Balkan Peninsula.
DS - Asia.
DT - Africa.
DU - Oceania, Australia, New Zealand.
DX - Roma (Gypsies).

E America & United States by Period
F America & United States by Area/Region

G - General Geography, Atlases, Maps.
GA - Cartography, Mathematical Geography
GB - Physical Geography
GC - Oceanography
GE - Environmental Sciences
GF - Human Geography
GN - Anthropology
GR - Folklore.
GT - Manners and Customs.
GV - Recreation, Leisure.

H - General Social Sciences.
HA - Statistics.
HB - Economic Theory, Demography, Business Cycles.
HC-HD - Economic History.
HE - Transportation and Communications.
HF - Commerce.
HG - Finance.
HJ - Public Finance.
HM - General Sociology.
HN - Social History, Problems, and Reform.
HQ - Family, Marriage, Women.
HS - Societies and Clubs.
HT - Cities, Communities, Races.
HV - Social Service, Welfare, Criminology.
HX - Socialism, Communism, Utopias, Anarchism.

J - General Legislative and Executive Papers.
JA - Political Science (General).
JC - Political Theory, Theory of the State
JF - Political Institutions and Public Administration
JK - Political Institutions and Public Administration: United States.
JL - Political Institutions and Public Administration: America Outside the U.S.
JN - Political Institutions and Public Administration: Europe.
JQ - Political Institutions and Public Administration: Asia, Africa, Australia, Oceania.
JS - Local Government.
JV - Colonies and Colonization. Emigration and Immigration.
JX - International Relations and Law.

K - Law (General).
KD - United Kingdom and Ireland.
KE - Canada.
KF - United States.
KG - Central America, Carribbean.
KH - South America.
KJ - Europe.

L - Education (General).
LA - History of Education.
LB - Theory and Practice of Education.
LC - Social Aspects of Education.
LD - Individual Institutions: United States.
LE - Individual Institutions: America except United States
LF - Individual Institutions: Europe
LG - Individual Institutions: Asia, Africa, Oceania
LH - College and School Magazines and Papers.
LJ - Student Fraternities and Societies in the United States.
LT - Multi-Subject Textbooks.

M - Instrumental and Vocal Music.
ML - Literature of Music.
MT - Musical Instruction and Study.

N - Visual Arts (General)
NA - Architecture
NB - Sculpture
NC - Illustration, Design, Drawing.
ND - Painting.
NE - Printing.
NK - Decorative Arts, Applied Arts.
NX - Arts in General

P - General Lingusitics
PA - Classical Languages and Literature.
PB - Modern European Languages, Celtic Languages and Literature.
PC - Romance Languages.
PD - Old Germanic, Scandinavian.
PE - English.
PF - Dutch, German.
PG - Slavic.
PH - Finnish.
PJ - Oriental, Semitic.
PK - Indo-Iranian.
PL - East Asian, African, Oceania.
PM - Indigenous American, Artificial Languages.
PN - Literary History and Collections.
PQ - Romance Literature.
PR - English Literature.
PS - American Literature.
PT - Germanic Literature.
PZ - Basic Reader/Childrens' Literature.

Q - General Science.
QA - Mathematics, Computer Science.
QB - Astronomy.
QC - Physics.
QD - Chemistry.
QE - Geology.
QH - Natural History, Biology.
QK - Botany.
QL - Zoology.
QM - Human Anatomy.
QP - Physiology.
QR - Microbiology.

R - General Medicine.
RA - Public Aspects of Medicine.
RB - Pathology.
RC - Internal Medicine.
RD - Surgery.
RE - Opthalmology.
RF - Ear, Nose, and Throat.
RG - Gynecology, Obstetrics.
RJ - Pediatrics.
RK - Dentistry.
RL - Dermatology.
RM - Therapeutics, Pharmacology.
RS - Pharmacy.
RT - Nursing.
RV - Botanic, Eclectic Medicine.
RX - Homeopathy.
RZ - Chiropractic, Osteopathy, Mental Healing.

S - Agriculture (General).
SB - Plant Culture.
SD - Forestry.
SF - Animal Culture.
SH - Aquaculture.
SK - Hunting.

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

U - Military Science (General)
UA - Armies: Organization, Description, Facilities, etc.
UB - Military Administration
UC - Maintenance and Transportation
UD - Infantry
UE - Cavalry, Armored and Mechanized Cavalry
UF - Artillery
UG - Military Engineering, Air Forces, Air Warfare
UH - Other Services

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