This primary source comes from the Records of the U.S. Geological Survey.
National Archives Identifier:
518033Full Citation: An overland caravan laden with boats. Robert B. Stanton's Denver, Colorado Canyon, and Pacific Railway Survey; 1889 - 1890; Records of the U.S. Geological Survey, Record Group 57. [Online Version, https://www.docsteach.org/documents/document/an-overland-caravan-laden-with-boats-robert-b-stantons-denver-colorado-canyon-and-pacific-railway-survey, April 20, 2024]