Classification
D - World History
98
H - Social Science
50
J - Political Science
43
L - Education
34
M - Music
29
Q - Science
29
A - General Works
19
R - Medicine
15
S - Agriculture
15
B - Philosophy, Psychology, Religion
11
T - Technology
8
G - Geography, Anthropology, Recreation
6
K - Law
6
P - Language and Literature
6
N - Fine Arts
5
Z - Library Science
5
F - General American History
2
U - Military Science
2
C - Historical Sciences
1
E - United States History
1