Classification
D - World History
45
H - Social Science
11
P - Language and Literature
8
A - General Works
5
Q - Science
4
S - Agriculture
3
B - Philosophy, Psychology, Religion
2
K - Law
2
R - Medicine
2
E - United States History
1
G - Geography, Anthropology, Recreation
1
L - Education
1
N - Fine Arts
1
T - Technology
1
Z - Library Science
1