United States. Bureau of Labor Statistics. Wage Indexes: Long-Term Trend Data for Selected Occupations and Metropolitan Areas : Bulletin of the United States Bureau of Labor Statistics, No. 1427 , Washington, D.C: For sale by the Superintendent of Documents, U.S. Government Printing Office, January 1965, https://fraser.stlouisfed.org/title/4913, accessed on January 13, 2025.