Subject
History
10
Design and construction
6
Railroads
6
Roads
6
Commercial policy
3
Landlord and tenant
2
Administration
1
Administration of estates
1
Agricultural laborers
1
Agriculture
1
Antiquities
1
Colonies
1
Costume
1
Education
1
Genealogy
1
Orangemen
1
Politics and government
1
Rhetoric
1
Social life and customs
1
Sublime, The
1