United States. Works Progress Administration , Wynne, Waller, Jr., 1906-1996 and Blackwell, Gordon. Survey of Rural Relief Cases Closed for Administrative Reasons in South Dakota : Study Made in November 1935, Covering June and July Closings, Series II, No. 12. Washington, DC: Works Progress Administration, Division of Social Research, January 23, 1936, https://fraser.stlouisfed.org/title/6728, accessed on October 5, 2024.