Classification
E - United States History
90
B - Philosophy, Psychology, Religion
28
D - World History
22
H - Social Science
21
C - Historical Sciences
11
K - Law
9
A - General Works
5
N - Fine Arts
5
G - Geography, Anthropology, Recreation
4
M - Music
4
L - Education
3
J - Political Science
2
S - Agriculture
2
T - Technology
2
F - General American History
1
P - Language and Literature
1