Classification
M - Music
33,214
H - Social Science
546
E - United States History
522
P - Language and Literature
474
S - Agriculture
439
F - General American History
383
D - World History
220
A - General Works
167
Z - Library Science
115
B - Philosophy, Psychology, Religion
93
J - Political Science
51
L - Education
27
N - Fine Arts
21
K - Law
17
T - Technology
14
R - Medicine
12
G - Geography, Anthropology, Recreation
10
C - Historical Sciences
6
Q - Science
6
U - Military Science
3