Classification
R - Medicine
243
D - World History
179
G - Geography, Anthropology, Recreation
91
B - Philosophy, Psychology, Religion
72
E - United States History
30
F - General American History
28
A - General Works
15
C - Historical Sciences
14
N - Fine Arts
4
Z - Library Science
3
H - Social Science
2
P - Language and Literature
2
U - Military Science
2
J - Political Science
1
T - Technology
1