Classification
K - Law
41
Q - Science
16
E - United States History
12
D - World History
10
H - Social Science
10
A - General Works
8
J - Political Science
8
U - Military Science
8
B - Philosophy, Psychology, Religion
4
R - Medicine
4
F - General American History
3
L - Education
3
P - Language and Literature
3
T - Technology
3
C - Historical Sciences
2
G - Geography, Anthropology, Recreation
1
S - Agriculture
1