Ridleys Ferry, California
This article relies largely or entirely on a single source. (April 2021)
It was on the Rancho Las Mariposas, an 1844 Mexican land grant acquired in 1847 by John C. Frémont. During the California Gold Rush Frémont built a stamp mill at Ridleys Ferry, and renamed it Benton Mills in honor of his father-in-law Senator Thomas Hart Benton.
The settlement endured during the 1850s and 1860s.