Classification
C - Historical Sciences
75
B - Philosophy, Psychology, Religion
40
E - United States History
25
D - World History
18
F - General American History
9
T - Technology
9
M - Music
8
R - Medicine
6
Q - Science
5
S - Agriculture
3
H - Social Science
2
G - Geography, Anthropology, Recreation
1
P - Language and Literature
1
Z - Library Science
1