United States. Bureau of Labor Statistics. "Union Wages and Hours of Motortruck Drivers and Helpers, July 1, 1945 : Bulletin of the United States Bureau of Labor Statistics, No. 874," Union Wages and Hours : Local Truckdrivers and Helpers (1946). https://fraser.stlouisfed.org/title/3960/item/494916, accessed on December 3, 2024.