Classification
H - Social Science
218
T - Technology
18
D - World History
15
L - Education
14
R - Medicine
14
J - Political Science
10
M - Music
8
G - Geography, Anthropology, Recreation
7
Q - Science
7
P - Language and Literature
5
S - Agriculture
5
B - Philosophy, Psychology, Religion
4
F - General American History
3
A - General Works
2
N - Fine Arts
2
U - Military Science
2
C - Historical Sciences
1
E - United States History
1
V - Naval Science
1
Z - Library Science
1