Classification
P - Language and Literature
90
E - United States History
58
Q - Science
47
A - General Works
26
T - Technology
23
D - World History
22
H - Social Science
17
J - Political Science
16
C - Historical Sciences
11
L - Education
9
F - General American History
8
B - Philosophy, Psychology, Religion
5
M - Music
2
R - Medicine
2
S - Agriculture
2
K - Law
1
Z - Library Science
1