Library of Congress Call Number
H - Social Science
621
R - Medicine
94
Z - Library Science
56
L - Education
44
U - Military Science
21
E - United States History
11
K - Law
10
B - Philosophy, Psychology, Religion
9
J - Political Science
7
D - World History
4
P - Language and Literature
3
F - General American History
2
A - General Works
1
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
T - Technology
1