CLASSIFICATION
D - World History
37
G - Geography, Anthropology, Recreation
21
Q - Science
21
F - General American History
17
T - Technology
14
E - United States History
8
V - Naval Science
4
A - General Works
3
C - Historical Sciences
3
B - Philosophy, Psychology, Religion
2
R - Medicine
2
S - Agriculture
2
N - Fine Arts
1