Classification
P - Language and Literature
105
B - Philosophy, Psychology, Religion
55
T - Technology
36
Q - Science
28
D - World History
15
A - General Works
12
M - Music
12
C - Historical Sciences
7
F - General American History
5
H - Social Science
5
E - United States History
4
J - Political Science
2
L - Education
1
N - Fine Arts
1
R - Medicine
1