Region
United States
6
Ohio River Valley
3
Colorado River
2
Colorado River (Colo.-Mexico)
2
Colorado River Valley
2
Mississippi River Valley
2
North America
2
Pennsylvania
2
Southwest, New
2
California, Southern
1
Colorado (Col.-Mexique : Fleuve)
1
Colorado River Valley (Colo.-Mexico)
1
Europe
1
États-Unis
1
États-Unis (Nouveau Sud-Ouest)
1
États-Unis (Ouest)
1
Massachusetts. Boston. 1824
1
New Southwest
1
Philadelphia
1
Philadelphia (Pa.)
1
Southern California
1
Southern States
1
Susquehanna County, Pennsylvania
1
Washington (D.C.)
1
West (U.S.)
1
West United States
1