Classification
F - General American History
18
D - World History
14
Q - Science
11
R - Medicine
10
P - Language and Literature
9
M - Music
7
B - Philosophy, Psychology, Religion
5
C - Historical Sciences
5
A - General Works
4
S - Agriculture
4
G - Geography, Anthropology, Recreation
2
T - Technology
2
E - United States History
1
J - Political Science
1
N - Fine Arts
1
Z - Library Science
1