United States. Bureau of Labor Statistics. Wages and Hours of Labor in the Building and Repairing of Steam Railroad Cars: 1907 to 1913 : Bulletin of the United States Bureau of Labor Statistics, No. 163 , Washington, D.C: Government Printing Office, October 28, 1914, https://fraser.stlouisfed.org/title/3822, accessed on January 13, 2025.