View on U.P. [sic] Railway, above St. Elmo showing where Jull Plow failed after making ten different attacks with four powerful engines average depth of snow 18 inches

Jackson, William Henry, 1843-1942, View on U.P. [sic] Railway, above St. Elmo showing where Jull Plow failed after making ten different attacks with four powerful engines average depth of snow 18 inches (1890 April 16). Denver Public Library Digital Collections, accessed 19/05/2026, https://digital.denverlibrary.org/nodes/view/1049807