Classification
H - Social Science
10,347
M - Music
6,451
T - Technology
4,459
R - Medicine
3,517
S - Agriculture
3,434
Q - Science
3,136
D - World History
2,729
F - General American History
1,929
K - Law
1,811
L - Education
1,517
B - Philosophy, Psychology, Religion
1,442
A - General Works
1,208
J - Political Science
1,205
P - Language and Literature
1,105
Z - Library Science
1,008
N - Fine Arts
808
G - Geography, Anthropology, Recreation
691
E - United States History
326
C - Historical Sciences
206
U - Military Science
182
V - Naval Science
92