Classification
F - General American History
15
N - Fine Arts
14
A - General Works
9
B - Philosophy, Psychology, Religion
2
H - Social Science
2
K - Law
2
C - Historical Sciences
1
D - World History
1
E - United States History
1
L - Education
1
M - Music
1
P - Language and Literature
1
R - Medicine
1
T - Technology
1