Employment Managers' Conference (1917 : Philadelphia, Pa.) , United States. Bureau of Labor Statistics and United States. Department of Labor. Proceedings of the Employment Managers' Conference, Philadelphia, Pa., April 2 and 3, 1917 : Bulletin of the United States Bureau of Labor Statistics, No. 227 , Washington, D.C: Government Printing Office, October 1917, https://fraser.stlouisfed.org/title/3862, accessed on September 5, 2024.