Classification
P - Language and Literature
74
D - World History
71
M - Music
49
H - Social Science
30
F - General American History
27
E - United States History
13
Q - Science
12
J - Political Science
7
K - Law
7
S - Agriculture
5
N - Fine Arts
4
R - Medicine
4
C - Historical Sciences
3
G - Geography, Anthropology, Recreation
3
A - General Works
2
T - Technology
2
B - Philosophy, Psychology, Religion
1
L - Education
1
Z - Library Science
1