In 1866, the County of Inyo was established from part of Tulare County. The Eastern High Sierra and the Owens Valley was the westernmost frontier in America at that time. In 1871, Daniel Bruhn was one of 41 wranglers herding some 3000 wild Spanish mustangs from Stockton, California to Texas. Their travels took them over the High Sierra and into the remote Owens Valley where they lost over 500 head of horses. The descendants of those mustangs still roam wild on the California/Nevada border just north of Bishop.