The original artwork, by John Mix Stanley, is in the Glenbow Art Collection. Please order reproductions directly from the Art Department, citing catalogue number 55.53.9. Published in volume 12 of 'Reports of Explorations and Surveys to Ascertain the Most Practicable and Economical Route for a Railroad from the Mississippi River to the Pacific Ocean'. -- Washington, D.C. : U.S. War Dept., 1860. p. 59.