Classification
H - Social Science
8,171
M - Music
8,106
S - Agriculture
3,766
K - Law
2,984
D - World History
2,728
E - United States History
2,273
J - Political Science
1,501
F - General American History
1,318
C - Historical Sciences
1,314
B - Philosophy, Psychology, Religion
1,255
Z - Library Science
1,251
T - Technology
1,250
Q - Science
1,239
L - Education
897
R - Medicine
852
A - General Works
711
P - Language and Literature
673
G - Geography, Anthropology, Recreation
349
N - Fine Arts
271
U - Military Science
218
V - Naval Science
41