This primary source comes from the Records of the Bureau of Public Roads.
National Archives Identifier:
513358Full Citation: Covered wagon with jackrabbit mules encounters an automobile on the trail near Big Springs, Nebr. By A. L. Westgard; 1912; Records of the Bureau of Public Roads, Record Group 30. [Online Version, https://www.docsteach.org/documents/document/covered-wagon-with-jackrabbit-mules-encounters-an-automobile-on-the-trail-near-big-springs-nebr-by-a-l-westgard, May 9, 2024]