Classification
M - Music
41
R - Medicine
30
B - Philosophy, Psychology, Religion
28
D - World History
27
H - Social Science
26
P - Language and Literature
15
K - Law
13
E - United States History
9
A - General Works
8
C - Historical Sciences
8
F - General American History
8
J - Political Science
6
T - Technology
6
Z - Library Science
5
G - Geography, Anthropology, Recreation
2
S - Agriculture
2
N - Fine Arts
1
Q - Science
1
U - Military Science
1