Classification
D - World History
155
K - Law
59
M - Music
51
Z - Library Science
47
F - General American History
36
H - Social Science
33
E - United States History
32
J - Political Science
28
C - Historical Sciences
9
T - Technology
9
A - General Works
7
S - Agriculture
7
B - Philosophy, Psychology, Religion
6
U - Military Science
6
L - Education
1
P - Language and Literature
1
R - Medicine
1
V - Naval Science
1