Classification
D - World History
526
H - Social Science
213
M - Music
193
F - General American History
149
P - Language and Literature
79
S - Agriculture
58
B - Philosophy, Psychology, Religion
53
Z - Library Science
41
G - Geography, Anthropology, Recreation
31
A - General Works
26
Q - Science
26
C - Historical Sciences
25
J - Political Science
23
T - Technology
21
L - Education
19
E - United States History
18
K - Law
16
N - Fine Arts
15
R - Medicine
13
U - Military Science
13