Classification
P - Language and Literature
162
Q - Science
130
H - Social Science
124
E - United States History
121
D - World History
109
T - Technology
65
J - Political Science
45
L - Education
15
S - Agriculture
14
K - Law
11
C - Historical Sciences
8
F - General American History
8
Z - Library Science
6
N - Fine Arts
4
A - General Works
2
G - Geography, Anthropology, Recreation
2
B - Philosophy, Psychology, Religion
1
R - Medicine
1
U - Military Science
1