United States. Women's Bureau , Gordon, Mildred J. and Frankfurter, Estelle S. The Development of Minimum-Wage Laws in the United States, 1912 to 1927 : Women's Bureau Bulletin, No. 61 , Washington: Govt. Print. Off., 1928, https://fraser.stlouisfed.org/title/5372, accessed on August 6, 2024.