George Wharton James, Eytel, Carl (illustrazioni), The Colorado Desert: As General Kearney Saw It, in The Four-Track News, vol. 10, n. 5, Passenger Department, New York Central & Hudson River R.R., maggio 1906, pp. 389–93, OCLC214967241.
George Wharton James, Eytel, Carl (illustrazioni), The Colorado Desert: As General Kearney Saw It, in The Four-Track News, vol. 10, n. 5, Passenger Department, New York Central & Hudson River R.R., maggio 1906, pp. 389–93, OCLC214967241.