[1] He emigrated to the United States with his family in 1868, and he grew up in Fort Ross, California.
[1] Raschen attended the San Francisco Art Association, and he studied under Charles Christian Nahl in California.
[1] Raschen maintained a studio on Montgomery Street in San Francisco, where he painted Native Americans and California landscapes.
[2] Notable patrons included Richard T. Crane, King C. Gillette, E. H. Harriman, James Stillman, Isidor Straus, Charles Lee Tilden, and William Wrigley Jr. Another collector, Harry Flayderman, self-published a catalog of his work in 1958.
[4] Raschen resided in San Francisco until 1906, when he moved to 1307 16th Avenue in Oakland, California.