Classification
S - Agriculture
272
M - Music
181
H - Social Science
178
E - United States History
148
J - Political Science
113
D - World History
111
C - Historical Sciences
98
F - General American History
81
K - Law
78
B - Philosophy, Psychology, Religion
57
T - Technology
51
Z - Library Science
32
Q - Science
28
L - Education
19
A - General Works
14
R - Medicine
14
G - Geography, Anthropology, Recreation
9
N - Fine Arts
9
P - Language and Literature
9
U - Military Science
3