Classification
D - World History
24
B - Philosophy, Psychology, Religion
16
R - Medicine
16
M - Music
12
A - General Works
11
F - General American History
11
Q - Science
6
S - Agriculture
6
H - Social Science
4
P - Language and Literature
4
G - Geography, Anthropology, Recreation
3
N - Fine Arts
3
C - Historical Sciences
2
Z - Library Science
2
K - Law
1
T - Technology
1