Classification
D - World History
27
P - Language and Literature
21
F - General American History
10
E - United States History
6
H - Social Science
6
N - Fine Arts
6
Z - Library Science
5
B - Philosophy, Psychology, Religion
4
A - General Works
2
G - Geography, Anthropology, Recreation
1
J - Political Science
1
M - Music
1
R - Medicine
1