Classification
P - Language and Literature
68,660
M - Music
4,459
F - General American History
3,622
K - Law
1,908
B - Philosophy, Psychology, Religion
1,516
H - Social Science
1,269
Q - Science
1,110
D - World History
1,004
R - Medicine
910
S - Agriculture
468
A - General Works
457
C - Historical Sciences
427
N - Fine Arts
342
J - Political Science
293
T - Technology
263
L - Education
253
E - United States History
201
G - Geography, Anthropology, Recreation
126
Z - Library Science
69
U - Military Science
49
V - Naval Science
10