Classification
P - Language and Literature
4,770
D - World History
1,700
H - Social Science
1,059
B - Philosophy, Psychology, Religion
711
K - Law
267
R - Medicine
254
J - Political Science
250
L - Education
184
N - Fine Arts
168
Q - Science
101
G - Geography, Anthropology, Recreation
88
S - Agriculture
78
M - Music
65
Z - Library Science
63
F - General American History
59
T - Technology
57
U - Military Science
50
A - General Works
43
C - Historical Sciences
27
E - United States History
25
V - Naval Science
15