1897. Journal of M. Crawford. Sources of the History of Oregon, Vol. 1, No. 1. Eugene, Ore.
Cross, Major Osborne
1851. RSW 1850, CD 587, pp. 128-231.
Dale, Harrison Clifford
1918. The Ashley-Smith Explorations and the Discovery of a Central Route to the Pacific, 1822-1829. Cleveland, Ohio.
Danilson, W. H.
1870. RCIA 1869, CD 1414, pp. 729-730.
De Smet, Pierre Jean
1905. Life, Letters, and Travels of Father Jean De Smet, S.J., 1801-1873. New York.
1906. Letters and Sketches. In Early Western Travels, 1748-1846, Vol. 27. R. G. Thwaites, ed. Cleveland, Ohio.