Columbia subject headings:
Land settlement--United States--History.
Landscapes--United States--History.
United States--Civilization.
United States--Social conditions--To 1865.
Harvard subject headings:
Land settlement--United States--History.
Landscapes--United States--History.
United States--Civilization.
United States--Social conditions--To 1865.
Princeton subject headings:
Land settlement--United States--History.
Landscapes--United States--History.
United States--Civilization.
United States--Social conditions--To 1865.