United States. Bureau of Labor Statistics. "Wage Chronology: A.T.&T., Long Lines Department, 1940-64 : Bulletin of the United States Bureau of Labor Statistics, No. 1443," Wage Chronology: American Telephone and Telegraph Company--Long Lines Department and Communications Workers of America (AFL-CIO) (1965). https://fraser.stlouisfed.org/title/4644/item/498042, accessed on March 13, 2025.