Classification
H - Social Science
111
T - Technology
43
M - Music
41
S - Agriculture
33
K - Law
27
L - Education
11
E - United States History
10
Q - Science
10
C - Historical Sciences
9
G - Geography, Anthropology, Recreation
7
B - Philosophy, Psychology, Religion
6
D - World History
4
F - General American History
4
J - Political Science
4
P - Language and Literature
4
R - Medicine
4
Z - Library Science
3
N - Fine Arts
2
U - Military Science
2
A - General Works
1