"Burchell, Robert A. (Summer C.E.1974). "The Loss of a Reputation; or, The Image of California in Britain before C.E.1875". California Historical Quarterly. 53 (3): 115–130. doi:10.2307/25157500. ISSN 0097-6059. JSTOR 25157500."
January 1, 1970
https://en.wikiquote.org/wiki/California_Gold_Rush