Classification
P - Language and Literature
1,455
R - Medicine
165
S - Agriculture
151
C - Historical Sciences
145
F - General American History
61
B - Philosophy, Psychology, Religion
51
A - General Works
41
Q - Science
25
D - World History
21
E - United States History
5
H - Social Science
4
K - Law
3
G - Geography, Anthropology, Recreation
1
T - Technology
1
Z - Library Science
1