Classification
D - World History
40
B - Philosophy, Psychology, Religion
24
A - General Works
18
R - Medicine
14
H - Social Science
11
S - Agriculture
10
F - General American History
9
K - Law
6
L - Education
6
Q - Science
6
G - Geography, Anthropology, Recreation
5
T - Technology
5
C - Historical Sciences
3
U - Military Science
3
E - United States History
2
M - Music
2
N - Fine Arts
2
Z - Library Science
2
J - Political Science
1
P - Language and Literature
1
V - Naval Science
1