Classification
P - Language and Literature
51
B - Philosophy, Psychology, Religion
18
D - World History
13
F - General American History
13
N - Fine Arts
13
L - Education
11
M - Music
10
H - Social Science
7
Q - Science
6
A - General Works
5
Z - Library Science
4
C - Historical Sciences
3
J - Political Science
1
S - Agriculture
1