California. Southern Pacific Transportation Company|Atchison, Topeka & Santa Fe|Western Pacific|Burlington Northern|Union Pacific|Almanor|Amador Central|Arcata and Mad River|Camino, Placerville and Lake Tahoe|Central California Traction Company|Kaiser Company Railroad|McCloud River|Modesto and Empire Traction|Sacramento Northern|Santa Maria Valley|Stockton Terminal and Eastern|Sierra Railroad|Mendocino Coast Railroad|Tidewater Southern|Trona|U.S. Gypsum Company|Ventura County Railroad|Yreka Western.