Classification
M - Music
36
K - Law
21
H - Social Science
19
F - General American History
17
J - Political Science
13
C - Historical Sciences
9
B - Philosophy, Psychology, Religion
6
D - World History
6
L - Education
5
A - General Works
4
P - Language and Literature
4
R - Medicine
3
T - Technology
3
Q - Science
2
U - Military Science
2
E - United States History
1
S - Agriculture
1