Classification
D - World History
185
M - Music
61
T - Technology
29
E - United States History
9
P - Language and Literature
9
Q - Science
9
H - Social Science
8
F - General American History
7
C - Historical Sciences
6
J - Political Science
4
A - General Works
3
B - Philosophy, Psychology, Religion
3
K - Law
2
V - Naval Science
2
Z - Library Science
2
L - Education
1
N - Fine Arts
1
U - Military Science
1