Classification
P - Language and Literature
23
S - Agriculture
13
T - Technology
9
F - General American History
8
L - Education
8
H - Social Science
7
K - Law
6
Q - Science
5
E - United States History
2
J - Political Science
2
M - Music
2
B - Philosophy, Psychology, Religion
1
C - Historical Sciences
1
Z - Library Science
1