Classification
H - Social Science
201
S - Agriculture
181
M - Music
107
C - Historical Sciences
20
B - Philosophy, Psychology, Religion
9
F - General American History
7
A - General Works
6
E - United States History
4
D - World History
3
R - Medicine
3
G - Geography, Anthropology, Recreation
2
P - Language and Literature
2
J - Political Science
1
K - Law
1
N - Fine Arts
1
Z - Library Science
1