Classification
H - Social Science
61
J - Political Science
28
F - General American History
24
K - Law
23
M - Music
15
Q - Science
15
E - United States History
8
D - World History
6
S - Agriculture
5
B - Philosophy, Psychology, Religion
3
R - Medicine
3
T - Technology
3
C - Historical Sciences
2
L - Education
2
U - Military Science
2
A - General Works
1
Z - Library Science
1