Library of Congress Classification

How are Call Numbers arranged on the shelves?

  • The first letter or letters of a Call Number are shelved alphabetically: H is before HM is before HV
  • The numbers following the first letter or letters are whole numbers. So 5 comes before 10; 10 comes before 100; 100 comes before 2000, etc., so HV 52 is before HV 502 is before HV4311
  • The number to the right of the decimal point is a fraction of the whole number to the left: PA128.25 is before PA128.3 is before PA128.325

Library of Congress Call Numbers List

A General Works

AE General Encyclopedias

B Philosophy, Psychology, Religion

B Philosophy
BC Logic
BF Psychology
BF Parapsychology & Occult
BL-BX Religion

C History: Auxiliary Branches

CB History of Civilization
CC Archaeology
CR Heraldry
CS Genealogy
CT Biography (general)

D History: General and Old World

D History (general)
DA Great Britain
DE Mediterranean Region
DK Soviet Union
DP Spain, Portugal
DS Asia
DT Africa

E-F History: New World

E North America
E Indians of North America
E United States (general)
F United States (local history)
F Canada
F Latin America
F South America

G Geography, Anthropology, Recreation

G Geography (general)
G Atlases & Maps
GB Physical Geography
GE Environment
GF Human Ecology
GN Anthropology
GR Folklore
GR Manners and Customs
GV Recreation & Leisure
GV Physical Education

H Social Science

H Social Sciences (general)
HA Statistics
HB-HD Economics
HE Transportation & Communications
HF Commerce
HG Finance
HJ Accounting
HM Sociology (general)
HQ The Family & Marriage
HQ Women's Studies
HV Social Welfare & Criminology

J Political Science

JC Political Theory
JF-JQ Constitutional History
JS Local Government
JX International Law

K Law

K Law (general)
KD Law of the United Kingdom
KF Law of the United States
KG Law of Latin America
KJ Law of Europe

L Education

LA History of Education
LB Theory and Practice of Education
LC Social Aspects of Education
LD-LG Universities, Colleges, & Schools

M Music

M Musical Scores
ML Literature of Music
MT Musical Instruction & Study

N Fine Arts

N Visual Arts (general)
NA Architecture
NB Sculpture
NC Drawing, Design, & Illustration
ND Painting
NE Print Media
NK Decorative & Applied Arts
NX Arts in General

P Language and Literature

P Linguistics & Philology (general)
P Rhetoric & Composition
P Communications
PA Classical Languages & Literature
PC Romance Languages
PD Germanic Languages
PE English Language
PJ Oriental Languages & Literatures
PM American Indian Languages
PN Literary History & Collections (general)
PQ Romance Languages
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 Biology (general)
QH Natural History (general)
QK Botany
QL Zoology
QM Human Anatomy
QP Physiology
QR Microbiology

R Medicine

R Medicine (general)
RA Public Health
RC Practice of Medicine
RM Nutrition
RM-RS Pharmacology & Pharmacy
RT Nursing

S Agriculture

S Agriculture (general)
SB Plant Culture
SD Forestry
SF Animal Culture
SH Aquaculture & Fisheries
SK Wildlife Management

T Technology

T Technology (general)
TA Engineering (general)
TC Hydraulic Engineering
TD Environmental Engineering
TE Highway Engineering
TH Building Construction
TJ Mechanical Engineering
TK Electrical Engineering & Electronics
TK Nuclear Engineering
TL Aeronautics & Motor Vehicles
TN Mining Engineering & Metallurgy
TP Chemical Technology
TR Photography
TS Manufacturing
TT Clothing Manufacture & Handicrafts
TX Home Economics
TX Hotels & Food Service

U-V Military and Naval Sciences

Z Bibliography and Library Science