Classification
K - Law
80
M - Music
55
H - Social Science
36
E - United States History
25
F - General American History
14
S - Agriculture
14
C - Historical Sciences
12
D - World History
9
Q - Science
9
J - Political Science
8
T - Technology
8
L - Education
7
Z - Library Science
4
B - Philosophy, Psychology, Religion
3
P - Language and Literature
2
R - Medicine
2
A - General Works
1
G - Geography, Anthropology, Recreation
1