United Nations | North Carolina | North America | South America | North Rhine-Westphalia | North Korea | Latin America | Confederate States of America | Commonwealth of Nations | America | North Yorkshire | Boy Scouts of America | University of North Carolina at Chapel Hill | Good Morning America | North Island | North Sea | League of Nations | North Africa | North Dakota | Bank of America | North | Central America | Raleigh, North Carolina | Chapel Hill, North Carolina | University of North Carolina | United Way of America | Captain America | Voice of America | Scarborough, North Yorkshire | North Pole |
In his 1981 book Nine Nations of North America, Washington Post editor Joel Garreau named one of his nations Ecotopia, after Callenbach's book.