Classification
D - World History
97
H - Social Science
50
J - Political Science
42
L - Education
32
S - Agriculture
28
M - Music
24
Q - Science
22
A - General Works
18
R - Medicine
14
B - Philosophy, Psychology, Religion
11
T - Technology
8
P - Language and Literature
7
G - Geography, Anthropology, Recreation
6
N - Fine Arts
6
Z - Library Science
4
F - General American History
2
K - Law
2
U - Military Science
2
C - Historical Sciences
1
E - United States History
1