Classification
H - Social Science
15
Q - Science
14
D - World History
12
M - Music
10
K - Law
7
F - General American History
6
C - Historical Sciences
4
N - Fine Arts
4
R - Medicine
4
S - Agriculture
4
J - Political Science
3
L - Education
3
T - Technology
3
B - Philosophy, Psychology, Religion
2
A - General Works
1
V - Naval Science
1
Z - Library Science
1