Classification
P - Language and Literature
33
D - World History
30
N - Fine Arts
16
M - Music
8
R - Medicine
7
G - Geography, Anthropology, Recreation
6
F - General American History
5
B - Philosophy, Psychology, Religion
2
Q - Science
2
S - Agriculture
2
T - Technology
2
A - General Works
1
C - Historical Sciences
1
H - Social Science
1
K - Law
1