Classification
D - World History
1,018
M - Music
450
P - Language and Literature
250
R - Medicine
219
B - Philosophy, Psychology, Religion
197
A - General Works
146
C - Historical Sciences
145
F - General American History
99
E - United States History
79
H - Social Science
40
N - Fine Arts
31
G - Geography, Anthropology, Recreation
28
S - Agriculture
23
Z - Library Science
18
L - Education
14
J - Political Science
12
T - Technology
10
Q - Science
7
K - Law
3
U - Military Science
2