Classification
C - Historical Sciences
26
B - Philosophy, Psychology, Religion
19
Q - Science
15
A - General Works
9
D - World History
9
H - Social Science
9
T - Technology
6
F - General American History
5
S - Agriculture
5
J - Political Science
3
E - United States History
2
K - Law
2
L - Education
2
P - Language and Literature
2
U - Military Science
2
G - Geography, Anthropology, Recreation
1
Z - Library Science
1