Classification
M - Music
1,976
H - Social Science
1,442
S - Agriculture
330
L - Education
232
D - World History
208
B - Philosophy, Psychology, Religion
151
T - Technology
121
J - Political Science
118
Q - Science
86
A - General Works
79
P - Language and Literature
70
Z - Library Science
68
K - Law
66
G - Geography, Anthropology, Recreation
49
F - General American History
45
R - Medicine
20
N - Fine Arts
16
U - Military Science
14
E - United States History
4
V - Naval Science
4
C - Historical Sciences
2