United States. Bureau of Labor Statistics and Clark, Lindley D. (Lindley Daniel), 1862-1951. Workmen's Compensation Legislation of the United States and Canada as of July 1, 1926 : Bulletin of the United States Bureau of Labor Statistics, No. 423 , Washington, D.C: G.P.O., December 1926, https://fraser.stlouisfed.org/title/4035, accessed on February 16, 2025.