Employment Managers' Conference (1918 : Rochester, N.Y.) and United States. Bureau of Labor Statistics. Proceedings of the Employment Managers' Conference, Rochester, N.Y., May 9, 10, 11, 1918. January, 1919 : Bulletin of the United States Bureau of Labor Statistics, No. 247 , Washington, D.C: Government Printing Office, January 1919, https://fraser.stlouisfed.org/title/3875, accessed on December 29, 2024.