Library of Congress Call Number
T - Technology
335
G - Geography, Anthropology, Recreation
73
R - Medicine
58
Q - Science
51
H - Social Science
35
J - Political Science
21
S - Agriculture
20
E - United States History
18
B - Philosophy, Psychology, Religion
15
P - Language and Literature
14
L - Education
13
F - General American History
11
D - World History
6
K - Law
4
Z - Library Science
3