Signatura
D - World History
47,250
P - Language and Literature
28,157
F - General American History
17,003
G - Geography, Anthropology, Recreation
14,417
H - Social Science
7,567
E - United States History
3,592
B - Philosophy, Psychology, Religion
3,033
T - Technology
2,690
N - Fine Arts
2,553
M - Music
2,084
C - Historical Sciences
1,172
A - General Works
711
S - Agriculture
700
Z - Library Science
530
R - Medicine
356
L - Education
300
K - Law
294
J - Political Science
288
Q - Science
219
U - Military Science
57
V - Naval Science
37