Classification
D - World History
91
M - Music
35
B - Philosophy, Psychology, Religion
29
R - Medicine
28
H - Social Science
27
P - Language and Literature
21
A - General Works
8
J - Political Science
8
Z - Library Science
6
C - Historical Sciences
5
F - General American History
4
K - Law
3
N - Fine Arts
2
S - Agriculture
2
T - Technology
2
E - United States History
1