Classification
D - World History
163
K - Law
60
M - Music
52
Z - Library Science
47
H - Social Science
41
F - General American History
39
E - United States History
35
J - Political Science
29
A - General Works
9
C - Historical Sciences
9
T - Technology
9
S - Agriculture
7
B - Philosophy, Psychology, Religion
6
U - Military Science
6
P - Language and Literature
3
L - Education
2
R - Medicine
1
V - Naval Science
1