Region
Abernethy Region
1
Abernethy Region (Sask.)
1
Africa
1
Africa, Southern
4
Africa, West
1
Aisén (Chile : Province)
1
Alabama
6
Alameda County
1
Alameda County (Calif.)
1
Alamo (San Antonio, Tex.)
1
Alaska
38
Albany
2
Albany (N.Y.)
2
Alberta
11
Alberta, Northern
1
Albion (Ill.)
3
Albuquerque
1
Albuquerque (N.M.)
1
Allegheny Mountains
3
Allegheny River Valley (Pa. and N.Y.)
2
Alpine County
1
Alpine County (Calif.)
1
Amazon River Region
1
Amazon River Valley
1
America
35
Antonine Wall (Scotland)
1
Appalachian Region
5
Appalachian Region, Southern
3
Arizona
34
Arizona Strip
1
Arkansas
11
Arthurdale
1
Athabasca River Region
1
Athabasca River Region (Alta.)
1
Augusta County
1
Aurora
2
Australia
24
Australia, Northern
1
Australien
1
Badlands
2
Badlands (N.D.)
2
Barbados
2
Baton Rouge (La.)
3
Belgium
1
Benson (Minn.)
2
Bent's Fort
2
Bent's Fort (Colo.)
3
Bent's Old Fort National Historic Site (Colo.)
2
Berks County
1
Berks County (Pa.)
1
more ...