Classification
M - Music
136
G - Geography, Anthropology, Recreation
117
R - Medicine
50
D - World History
35
Q - Science
35
F - General American History
25
E - United States History
20
P - Language and Literature
20
B - Philosophy, Psychology, Religion
18
H - Social Science
18
T - Technology
15
C - Historical Sciences
10
A - General Works
6
Z - Library Science
5
S - Agriculture
4
J - Political Science
1