Classification
P - Language and Literature
195
Q - Science
170
H - Social Science
135
E - United States History
129
D - World History
116
A - General Works
90
T - Technology
70
J - Political Science
66
B - Philosophy, Psychology, Religion
42
L - Education
23
S - Agriculture
20
M - Music
17
C - Historical Sciences
16
K - Law
16
F - General American History
14
Z - Library Science
7
N - Fine Arts
6
G - Geography, Anthropology, Recreation
3
R - Medicine
3
U - Military Science
2