Classification
S - Agriculture
3,415
M - Music
2,769
H - Social Science
1,994
D - World History
553
P - Language and Literature
344
L - Education
251
A - General Works
238
B - Philosophy, Psychology, Religion
225
J - Political Science
190
F - General American History
141
Q - Science
139
K - Law
128
T - Technology
118
G - Geography, Anthropology, Recreation
102
Z - Library Science
86
R - Medicine
60
N - Fine Arts
46
C - Historical Sciences
33
U - Military Science
32
E - United States History
29
V - Naval Science
10