Classification
P - Language and Literature
573
K - Law
148
J - Political Science
75
H - Social Science
62
D - World History
11
B - Philosophy, Psychology, Religion
9
T - Technology
5
E - United States History
2
L - Education
2
S - Agriculture
2
C - Historical Sciences
1
F - General American History
1
M - Music
1
Q - Science
1
R - Medicine
1
U - Military Science
1
V - Naval Science
1
Z - Library Science
1