Classification
P - Language and Literature
68 917
M - Music
5 114
F - General American History
3 701
K - Law
2 009
H - Social Science
1 704
A - General Works
1 671
B - Philosophy, Psychology, Religion
1 624
D - World History
1 378
R - Medicine
1 326
Q - Science
1 224
S - Agriculture
659
N - Fine Arts
534
T - Technology
462
C - Historical Sciences
432
J - Political Science
394
L - Education
358
E - United States History
217
G - Geography, Anthropology, Recreation
153
Z - Library Science
101
U - Military Science
55
V - Naval Science
15