Número de Clasificación
A - General Works
1,844
B - Philosophy, Psychology, Religion
593
C - Historical Sciences
537
E - United States History
456
S - Agriculture
245
T - Technology
245
M - Music
237
N - Fine Arts
142
Z - Library Science
91
D - World History
78
F - General American History
48
P - Language and Literature
41
H - Social Science
31
K - Law
19
J - Political Science
8
L - Education
7
G - Geography, Anthropology, Recreation
4
R - Medicine
4
U - Military Science
2
V - Naval Science
2