Library of Congress Call Number
Z - Library Science
32
E - United States History
6
B - Philosophy, Psychology, Religion
5
F - General American History
4
L - Education
3
P - Language and Literature
3
T - Technology
3
C - Historical Sciences
2
D - World History
2
G - Geography, Anthropology, Recreation
2
H - Social Science
2
R - Medicine
2
K - Law
1
S - Agriculture
1