This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
530908Full Citation: Climbing Pike's Peak, Colorado, in winter, rounding Windy Point; ca. 1890; Records of the Office of the Chief Signal Officer, Record Group 111. [Online Version, https://www.docsteach.org/documents/document/climbing-pikes-peak-colorado-in-winter-rounding-windy-point, May 12, 2024]