Outline of the Butterfield route Article Date September 1935 Journal Title Hist Soc of Southern Calif Quarterly
Old Butterfield stage coach line Author Frank Marion King Journal Title Pioneer western empire builders
Notes of travel by the Overland Mail, San Francisco to Fort Yuma Article Date September 1935 Journal Title Hist Soc of Southern Calif Quarterly
Mercy express to Dragoon Springs Author R. Lebec Article Date July-August 1970 Article Abstract The murders at Dragoon Springs in 1858 and the survival of Silas St. John Journal Title True West
Map of the Butterfield Overland Mail route from San Francisco to St. Louis Article Date April 1957 Journal Title N M Hist Rev
Dust of the "swift-wagon"; a glimpse of John Butterfield and ... the great Southern Overland Mail Author W. and G. H. Banning Article Date February 1930 Journal Title Touring Topics