United States. Bureau of Labor Statistics. Wage Indexes: Long-Term Trend Data for Selected Occupations and Metropolitan Areas, 1907-66 : Bulletin of the United States Bureau of Labor Statistics, No. 1505 , Washington, D.C: U.S. G.P.O., November 1966, https://fraser.stlouisfed.org/title/4914, accessed on September 19, 2024.