Classification
D - World History
29
P - Language and Literature
18
H - Social Science
11
N - Fine Arts
4
E - United States History
3
G - Geography, Anthropology, Recreation
3
K - Law
3
M - Music
3
L - Education
2
S - Agriculture
2
B - Philosophy, Psychology, Religion
1
C - Historical Sciences
1
F - General American History
1
J - Political Science
1
R - Medicine
1
T - Technology
1
Z - Library Science
1