Classification
M - Music
4,274
H - Social Science
2,436
E - United States History
2,135
D - World History
2,088
S - Agriculture
2,079
K - Law
1,733
C - Historical Sciences
1,240
B - Philosophy, Psychology, Religion
1,165
F - General American History
948
Z - Library Science
862
J - Political Science
557
P - Language and Literature
475
A - General Works
399
T - Technology
397
R - Medicine
362
Q - Science
361
L - Education
228
G - Geography, Anthropology, Recreation
126
N - Fine Arts
103
U - Military Science
98
V - Naval Science
21