Classification
P - Language and Literature
1,967
F - General American History
1,908
M - Music
1,042
L - Education
617
C - Historical Sciences
608
B - Philosophy, Psychology, Religion
517
H - Social Science
510
S - Agriculture
472
D - World History
425
A - General Works
325
E - United States History
303
J - Political Science
278
Q - Science
276
R - Medicine
250
T - Technology
175
K - Law
122
Z - Library Science
102
N - Fine Arts
59
G - Geography, Anthropology, Recreation
36
U - Military Science
25