Classification
P - Language and Literature
3,664
H - Social Science
950
K - Law
739
Q - Science
300
D - World History
224
F - General American History
172
J - Political Science
122
B - Philosophy, Psychology, Religion
107
G - Geography, Anthropology, Recreation
82
M - Music
78
R - Medicine
58
N - Fine Arts
56
L - Education
50
C - Historical Sciences
41
S - Agriculture
35
T - Technology
28
Z - Library Science
20
A - General Works
16
U - Military Science
15
E - United States History
8