Parker, Florence E. (Florence Evelyn) , United States. Bureau of Labor Statistics and United States. Congress. House. Consumers', Credit, and Productive Cooperative Societies, 1929 : Bulletin of the United States Bureau of Labor Statistics, No. 531 , Washington: U.S. G.P.O., February 1931, https://fraser.stlouisfed.org/title/4083, accessed on December 21, 2024.