Classification
D - World History
60
A - General Works
32
M - Music
29
P - Language and Literature
27
B - Philosophy, Psychology, Religion
25
E - United States History
14
F - General American History
9
R - Medicine
9
H - Social Science
6
C - Historical Sciences
4
G - Geography, Anthropology, Recreation
4
U - Military Science
2
J - Political Science
1
S - Agriculture
1