would serve as governor of Arizona Territory from 1878 to 1881, but
most of his post-Civil War career was consumed by speculative activities
in western mines, land, and railroads. He died in virtual poverty in
New York City on 13 July 1890.
grandest achievement was in exploring the West and making it known through
his lively, readable reports (prepared with the help of his wife) and
his maps (drawn with the assistance of Charles Preuss). They seem to
have been influential in the Mormons' decision to settle in the Salt
Lake Valley. He also discovered and named the Great Basin as a geologic
and geographic entity and established the correct elevation of the Great
Salt Lake at 4,200 feet.
Allan Nevins, Fremont: Pathmarker of the West (1955); Donald Jackson
and/or Mary Lee Spence, The Expeditions of John Charles Frémont (1970-84).