Classification
S - Agriculture
3,075
M - Music
2,089
H - Social Science
1,564
D - World History
437
P - Language and Literature
288
L - Education
241
B - Philosophy, Psychology, Religion
191
J - Political Science
143
A - General Works
130
Q - Science
130
K - Law
127
F - General American History
116
T - Technology
111
G - Geography, Anthropology, Recreation
97
Z - Library Science
66
R - Medicine
54
N - Fine Arts
36
C - Historical Sciences
30
E - United States History
28
U - Military Science
20
V - Naval Science
7