Classification
H - Social Science
88
S - Agriculture
44
M - Music
26
D - World History
23
K - Law
17
J - Political Science
16
Q - Science
10
C - Historical Sciences
6
F - General American History
6
G - Geography, Anthropology, Recreation
6
Z - Library Science
6
L - Education
5
T - Technology
5
A - General Works
3
R - Medicine
2
E - United States History
1
N - Fine Arts
1
P - Language and Literature
1
U - Military Science
1