Classification
P - Language and Literature
93
D - World History
45
H - Social Science
10
M - Music
9
N - Fine Arts
7
A - General Works
6
Q - Science
6
B - Philosophy, Psychology, Religion
5
T - Technology
3
C - Historical Sciences
2
E - United States History
2
F - General American History
2
K - Law
2
G - Geography, Anthropology, Recreation
1
J - Political Science
1
R - Medicine
1
S - Agriculture
1