Classification
F - General American History
6,485
D - World History
1,105
M - Music
520
E - United States History
419
B - Philosophy, Psychology, Religion
232
K - Law
207
H - Social Science
204
P - Language and Literature
204
J - Political Science
197
Z - Library Science
190
R - Medicine
97
C - Historical Sciences
81
A - General Works
56
S - Agriculture
52
U - Military Science
40
T - Technology
36
L - Education
27
Q - Science
18
N - Fine Arts
11
V - Naval Science
10
G - Geography, Anthropology, Recreation
6