Region
Acapulco (Mexico)
3
Acatlán de Juarez (Mexico)
1
America
1
Andes
1
Andes Region
1
Arizona
8
Bahamas
1
Baja California (Mexico : Peninsula)
2
Baja California (Peninsula)
1
California
11
California, Gulf of
3
California, Gulf of (Mexico)
3
California, Southern
1
Canada
2
Central America
13
Chiapas
1
Chiapas (Mexico)
2
Chihuahua (Mexico : State)
2
Chile
2
Coatepec Costales (Mexico)
1
Colorado
2
Colorado Plateau
1
Colorado River (Colo.-Mexico)
22
Colorado River Valley (Colo.-Mexico)
2
Colorado River Watershed (Colo.-Mexico)
3
Copper Canyon (Mexico)
1
Cuba
2
Cuernavaca (Mexico)
2
Egypt
1
Ethiopia
1
Foreign countries
1
Gabon
2
Grand Canyon
4
Grand Canyon (Ariz.)
9
Grand canyon (Ariz.)
1
Green River (Wyo.-Utah)
1
Guanajuato
2
Guanajuato (Mexico)
2
Guatemala
1
Guerrero (Mexico : State)
1
Gulf Coast
1
Gulf Coast (Mexico)
1
Gulf Coast (Tex.)
1
Hawaii
1
India
1
Kansas
1
Latin America
3
Mexico
161
Mexico City (Mexico)
5
Michoacan
1
more ...