Classification
Q - Science
46
R - Medicine
21
D - World History
17
E - United States History
10
P - Language and Literature
8
B - Philosophy, Psychology, Religion
6
A - General Works
3
C - Historical Sciences
3
F - General American History
1
G - Geography, Anthropology, Recreation
1
H - Social Science
1
M - Music
1
S - Agriculture
1
Z - Library Science
1