Classification
D - World History
121
M - Music
98
F - General American History
31
P - Language and Literature
23
R - Medicine
9
A - General Works
6
C - Historical Sciences
4
B - Philosophy, Psychology, Religion
2
J - Political Science
2
K - Law
2
E - United States History
1
H - Social Science
1
U - Military Science
1
Z - Library Science
1