Classification
P - Language and Literature
50
M - Music
22
B - Philosophy, Psychology, Religion
19
Q - Science
18
F - General American History
14
C - Historical Sciences
8
N - Fine Arts
7
A - General Works
4
H - Social Science
3
R - Medicine
3
E - United States History
2
K - Law
1
S - Agriculture
1
Z - Library Science
1