Classification
S - Agriculture
166
H - Social Science
139
F - General American History
62
M - Music
46
K - Law
44
E - United States History
40
D - World History
36
T - Technology
34
C - Historical Sciences
32
J - Political Science
28
Q - Science
16
L - Education
12
R - Medicine
12
B - Philosophy, Psychology, Religion
11
Z - Library Science
10
A - General Works
6
G - Geography, Anthropology, Recreation
5
P - Language and Literature
2
U - Military Science
2
N - Fine Arts
1