Classification
M - Music
55
D - World History
36
R - Medicine
27
K - Law
22
B - Philosophy, Psychology, Religion
17
E - United States History
16
H - Social Science
11
A - General Works
9
C - Historical Sciences
7
L - Education
6
P - Language and Literature
6
Q - Science
4
T - Technology
3
F - General American History
2
J - Political Science
2
N - Fine Arts
2
S - Agriculture
2
G - Geography, Anthropology, Recreation
1
Z - Library Science
1