Classification
E - United States History
58
K - Law
24
M - Music
16
F - General American History
10
Z - Library Science
7
D - World History
6
A - General Works
5
B - Philosophy, Psychology, Religion
3
T - Technology
3
P - Language and Literature
2
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
H - Social Science
1
L - Education
1
R - Medicine
1