Classification
H - Social Science
9,279
M - Music
5,459
T - Technology
3,964
D - World History
3,738
Q - Science
3,614
S - Agriculture
3,490
R - Medicine
2,936
P - Language and Literature
2,922
F - General American History
2,215
B - Philosophy, Psychology, Religion
1,887
A - General Works
1,783
Z - Library Science
1,221
L - Education
1,128
J - Political Science
1,091
K - Law
939
N - Fine Arts
861
G - Geography, Anthropology, Recreation
693
E - United States History
405
U - Military Science
226
C - Historical Sciences
215
V - Naval Science
78