Classification
M - Music
66
T - Technology
27
F - General American History
10
E - United States History
7
C - Historical Sciences
5
L - Education
5
A - General Works
4
D - World History
4
Z - Library Science
4
B - Philosophy, Psychology, Religion
3
H - Social Science
1
N - Fine Arts
1
P - Language and Literature
1
Q - Science
1