Spatial Coverage
- Puebla (State)2
- San Luis Potosí (State)2
- South America2
- Tampico (Tamaulipas)2
- Tehuantepec, Isthmus of2
- Texas.2
- Tlaxcala (Mexico : State)2
- Tlaxcala (State)2
- Zacatecas (Mexico : State)2
- Baja California (State)1
- Baja California Norte1
- Baja California Norte (Mexico)1
- Brewster County (Tex.)1
- British Columbia1
- Calihualá (Mexico)1
- Camargo (Chihuahua)1
- Cameron County (Tex.)1
- Campeche (Mexico : State)1
- Campeche (State)1
- Canal Zone1
