Classification
F - General American History
101
S - Agriculture
45
H - Social Science
42
T - Technology
13
K - Law
8
B - Philosophy, Psychology, Religion
7
R - Medicine
7
A - General Works
6
M - Music
6
D - World History
4
E - United States History
4
J - Political Science
3
Q - Science
3
Z - Library Science
3
P - Language and Literature
2
N - Fine Arts
1