Classification
P - Language and Literature
28,829
M - Music
860
Q - Science
590
B - Philosophy, Psychology, Religion
585
H - Social Science
573
D - World History
454
F - General American History
341
A - General Works
336
K - Law
310
R - Medicine
225
J - Political Science
139
T - Technology
132
C - Historical Sciences
119
N - Fine Arts
113
S - Agriculture
89
G - Geography, Anthropology, Recreation
61
E - United States History
54
L - Education
30
Z - Library Science
27
U - Military Science
13
V - Naval Science
5