[1] The league started the season with the Albuquerque Dukes, El Paso Mackmen, Las Cruces Farmers, Phoenix Senators and Tucson Old Pueblos joining Douglas as charter member franchises.
The Douglas and Las Cruces Farmers teams were both dropped from the league on May 24, 1915, due to financial difficulties.
[4] The Rio Grande Association continued play with four teams, but the league itself folded before the end of the 1915 season.
The Rio Grande Association permanently folded on July 5, 1915, with the Phoenix Senators team in first place.
Douglas partnered with neighboring Bisbee, Arizona to form the Bisbee-Douglas Miners of the 1948 Arizona-Texas League.