Classification
H - Social Science
126
S - Agriculture
29
M - Music
28
C - Historical Sciences
21
B - Philosophy, Psychology, Religion
15
J - Political Science
10
P - Language and Literature
8
D - World History
7
A - General Works
5
E - United States History
2
F - General American History
2
G - Geography, Anthropology, Recreation
2
T - Technology
2