Classification
H - Social Science
10,350
M - Music
6,092
T - Technology
4,455
R - Medicine
3,515
S - Agriculture
3,429
Q - Science
3,136
D - World History
2,783
K - Law
1,807
F - General American History
1,732
L - Education
1,496
B - Philosophy, Psychology, Religion
1,449
A - General Works
1,212
J - Political Science
1,207
P - Language and Literature
1,109
Z - Library Science
1,014
N - Fine Arts
823
G - Geography, Anthropology, Recreation
696
E - United States History
328
C - Historical Sciences
304
U - Military Science
183
V - Naval Science
92