Handwritten letter from H. W. Underhill to Oscar W. Schaeffer, dated September 19, 1916.
Unknown, "1916-09-19; Letter, from H.W. Underhill, Mound City (Kan.), to Oscar W. Schaeffer, Girard (Kan.)" (2011). The Jefferson Highway Association, Crawford County Division, Records, 1915-2005. 139.