Classification
F - General American History
5,772
H - Social Science
72
P - Language and Literature
51
M - Music
30
L - Education
15
B - Philosophy, Psychology, Religion
11
D - World History
11
A - General Works
5
E - United States History
5
R - Medicine
4
Z - Library Science
4
C - Historical Sciences
3
J - Political Science
2
G - Geography, Anthropology, Recreation
1
N - Fine Arts
1
T - Technology
1
U - Military Science
1