Classification
D - World History
699
C - Historical Sciences
306
R - Medicine
186
G - Geography, Anthropology, Recreation
171
P - Language and Literature
139
M - Music
64
N - Fine Arts
41
F - General American History
40
B - Philosophy, Psychology, Religion
39
A - General Works
24
E - United States History
24
Z - Library Science
13
H - Social Science
6
Q - Science
6
T - Technology
4
S - Agriculture
3
V - Naval Science
2
L - Education
1
U - Military Science
1