Curated OER
Wikipedia: Natl Historic Landmarks in Ca: Yuma Crossing and Associated Sites
A major crossroads for Alta California as well as the Westward expansion of the United States. It has several archaeological and historical sites, shared with Arizona across the Colorado River, including Fort Yuma and other state parks.
Curated OER
Campbell, Ben Nighthorse (1933 )
The Biographical Directory of the United States Congress features a brief summary of the career of Colorado Senator Ben Nighthorse Campbell who served from 1993-2005 both as a republican and a Democrat.