Classification
T - Technology
289
D - World History
131
P - Language and Literature
98
C - Historical Sciences
64
H - Social Science
57
F - General American History
52
R - Medicine
44
B - Philosophy, Psychology, Religion
36
E - United States History
33
K - Law
26
A - General Works
23
M - Music
21
Q - Science
21
U - Military Science
20
J - Political Science
12
S - Agriculture
8
Z - Library Science
5
G - Geography, Anthropology, Recreation
2
L - Education
2
V - Naval Science
1