Classification
H - Social Science
73
J - Political Science
33
M - Music
19
S - Agriculture
18
T - Technology
17
L - Education
14
Z - Library Science
10
D - World History
6
F - General American History
5
G - Geography, Anthropology, Recreation
5
N - Fine Arts
5
P - Language and Literature
5
E - United States History
4
K - Law
3
R - Medicine
3
B - Philosophy, Psychology, Religion
2
C - Historical Sciences
1
Q - Science
1
V - Naval Science
1