Classification
D - World History
131
M - Music
116
A - General Works
66
F - General American History
55
B - Philosophy, Psychology, Religion
45
T - Technology
20
E - United States History
16
R - Medicine
14
C - Historical Sciences
12
H - Social Science
8
Q - Science
7
G - Geography, Anthropology, Recreation
6
N - Fine Arts
5
S - Agriculture
2
Z - Library Science
2
J - Political Science
1
P - Language and Literature
1