CLASSIFICATION
M - Music
5,696
C - Historical Sciences
5,142
L - Education
2,411
T - Technology
370
S - Agriculture
236
F - General American History
170
P - Language and Literature
67
E - United States History
60
K - Law
57
G - Geography, Anthropology, Recreation
56
B - Philosophy, Psychology, Religion
49
A - General Works
44
J - Political Science
43
V - Naval Science
39
U - Military Science
38
H - Social Science
19
R - Medicine
19
D - World History
12
N - Fine Arts
8
Z - Library Science
1