Classification
F - General American History
417
H - Social Science
340
P - Language and Literature
281
M - Music
92
K - Law
64
R - Medicine
32
C - Historical Sciences
29
A - General Works
28
B - Philosophy, Psychology, Religion
26
D - World History
13
L - Education
11
E - United States History
9
S - Agriculture
8
J - Political Science
5
T - Technology
5
U - Military Science
3
Q - Science
2
G - Geography, Anthropology, Recreation
1