Classification
E - United States History
68
A - General Works
16
M - Music
14
B - Philosophy, Psychology, Religion
9
D - World History
7
H - Social Science
5
K - Law
5
P - Language and Literature
5
C - Historical Sciences
4
F - General American History
3
J - Political Science
3
U - Military Science
3
R - Medicine
2
T - Technology
2
Z - Library Science
2
S - Agriculture
1