Classification
H - Social Science
89
M - Music
34
T - Technology
29
D - World History
16
P - Language and Literature
13
B - Philosophy, Psychology, Religion
12
A - General Works
10
C - Historical Sciences
9
R - Medicine
6
E - United States History
5
F - General American History
5
K - Law
2
S - Agriculture
2
Z - Library Science
2