Classification
H - Social Science
3,668
M - Music
1,136
R - Medicine
839
D - World History
579
P - Language and Literature
573
B - Philosophy, Psychology, Religion
471
F - General American History
307
A - General Works
279
S - Agriculture
226
E - United States History
175
C - Historical Sciences
121
J - Political Science
87
T - Technology
46
K - Law
43
Z - Library Science
43
G - Geography, Anthropology, Recreation
24
L - Education
15
N - Fine Arts
9
Q - Science
7
U - Military Science
5
V - Naval Science
1