expedition-artist Richard H. (1821-1853) (brother) ; expedition-artist Benjamin J. (1818-1849) (brother) ;
United States of America
Journal of the Academy of natural sciences of Philadelphia (1817-42) ; Lt. J.C. Fremont (Nicollet's Exploration of Upper Mississippi 1836; Upper California 1845 ;
artist Richard H. Kern (brother) ; official artist of Rodgers and Ringgold Expedition (1853) ;
natural, topographical, botanical, and zoological sketching and watercolour ;