Classification
G - Geography, Anthropology, Recreation
236
M - Music
211
R - Medicine
92
D - World History
78
B - Philosophy, Psychology, Religion
52
P - Language and Literature
45
F - General American History
41
A - General Works
35
Q - Science
27
T - Technology
17
C - Historical Sciences
15
H - Social Science
15
Z - Library Science
7
E - United States History
6
S - Agriculture
4
L - Education
2
N - Fine Arts
1