Other
Tariff
57
Protectionism
36
History
25
Canals
22
Politics and government
17
Free trade and protection
14
Protection
14
African Americans
12
Colonization
12
Railroads
12
Public works
11
Causes
9
Nullification (States' rights)
9
Political parties
9
Yellow fever
9
Banks and banking
8
Description and travel
8
Economic conditions
8
Plague
8
Agriculture
7
Free trade
7
Poor
6
Women
6
Commercial policy
5
Education
5
Employment
5
Foreign relations
5
Clergy
4
Commerce
4
Histoire
4
Poles in the United States
4
Polish people
4
States' rights (American politics)
4
Yellow Fever
4
Catholics
3
Charities
3
Church history
3
Disease Outbreaks
3
Economics
3
Emigration and immigration
3
Fièvre jaune
3
Government
3
Industrial promotion
3
Mortality
3
Olive branch
3
Politique et gouvernement
3
Publishers and publishing
3
Wages
3
American literature
2
Atlases
2
more ...