Classification
E - United States History
19
M - Music
19
K - Law
18
P - Language and Literature
12
D - World History
7
B - Philosophy, Psychology, Religion
5
Z - Library Science
5
J - Political Science
4
R - Medicine
4
H - Social Science
2
C - Historical Sciences
1
F - General American History
1
Q - Science
1
T - Technology
1