Classification
F - General American History
488
R - Medicine
112
Q - Science
70
T - Technology
59
M - Music
46
Z - Library Science
30
D - World History
26
S - Agriculture
25
P - Language and Literature
21
H - Social Science
20
B - Philosophy, Psychology, Religion
15
L - Education
14
A - General Works
9
C - Historical Sciences
6
J - Political Science
5
K - Law
5
E - United States History
4
G - Geography, Anthropology, Recreation
3
N - Fine Arts
2