Classification
D - World History
529
P - Language and Literature
284
F - General American History
224
M - Music
206
H - Social Science
98
B - Philosophy, Psychology, Religion
82
K - Law
72
N - Fine Arts
63
R - Medicine
51
A - General Works
47
E - United States History
31
C - Historical Sciences
27
J - Political Science
21
G - Geography, Anthropology, Recreation
18
Z - Library Science
13
Q - Science
11
S - Agriculture
11
T - Technology
6
L - Education
5