Classification
H - Social Science
3,854
P - Language and Literature
2,019
T - Technology
1,394
R - Medicine
1,228
M - Music
759
B - Philosophy, Psychology, Religion
706
S - Agriculture
453
A - General Works
391
C - Historical Sciences
293
F - General American History
258
D - World History
249
K - Law
180
Z - Library Science
174
E - United States History
114
Q - Science
94
N - Fine Arts
48
L - Education
29
G - Geography, Anthropology, Recreation
26
V - Naval Science
25
J - Political Science
17
U - Military Science
11