Classification
F - General American History
56
A - General Works
41
H - Social Science
30
E - United States History
29
C - Historical Sciences
21
K - Law
21
M - Music
21
S - Agriculture
17
J - Political Science
12
P - Language and Literature
12
B - Philosophy, Psychology, Religion
10
N - Fine Arts
10
R - Medicine
6
Z - Library Science
6
D - World History
4
T - Technology
4
Q - Science
3
G - Geography, Anthropology, Recreation
2