Library of Congress Subject Classification

A General Works Main Level
B Philosophy, Psychology, & Religion Main Level
C Auxiliary Sciences of History Second Level
D General & Old World History Second Level
E History of America Second Level
F History of the United States & British, Dutch, French & Latin America Second Level
G Geography, Anthropology, & Recreation Second Level
H Social Sciences Second Level
J Political Science Second Level
K Law Second Level
L Education Second Level
M Music Second Level
N Fine Arts Second Level
P Language & Literature Lower Level
Q Science Lower Level
R Medicine Lower Level
S Agriculture Lower Level
T Technology Lower Level
U Military Science Lower Level
V Naval Science Lower Level
Z Bibliography, Library Science, & General Information Resources Main Level