Classification
D - World History
2,151
B - Philosophy, Psychology, Religion
2,135
A - General Works
973
Q - Science
680
P - Language and Literature
188
T - Technology
177
H - Social Science
120
G - Geography, Anthropology, Recreation
87
S - Agriculture
77
C - Historical Sciences
76
R - Medicine
65
Z - Library Science
40
E - United States History
34
F - General American History
26
M - Music
24
N - Fine Arts
24
K - Law
7
J - Political Science
5
L - Education
3