Classification
H - Social Science
113
K - Law
48
T - Technology
39
E - United States History
34
S - Agriculture
34
L - Education
24
M - Music
20
A - General Works
14
B - Philosophy, Psychology, Religion
10
R - Medicine
10
Z - Library Science
9
D - World History
6
G - Geography, Anthropology, Recreation
5
J - Political Science
4
P - Language and Literature
4
U - Military Science
3
C - Historical Sciences
2
N - Fine Arts
1
Q - Science
1
V - Naval Science
1