Classification
F - General American History
91
M - Music
27
C - Historical Sciences
7
D - World History
3
E - United States History
3
L - Education
3
P - Language and Literature
3
S - Agriculture
3
B - Philosophy, Psychology, Religion
2
H - Social Science
2
Q - Science
2
R - Medicine
2
A - General Works
1
T - Technology
1
Z - Library Science
1