Carter, Harvey L. (1983) [1971]. "Robert Campbell". In Leroy R. Hafen (ed.). Trappers of the Far West: Sixteen Biographical Sketches. Lincoln: University of Nebraska Press. pp.298–99. ISBN0-8032-7218-9. originally published in Leroy R. Hafen, ed. (1971). Mountain Men and Fur Traders of the Far West vol. VIII. Glendale: The Arthur H Clark Company.