United States. Bureau of Labor Statistics. "Union Wages and Hours: Motortruck Drivers and Helpers, July 1, 1947 : Bulletin of the United States Bureau of Labor Statistics, No. 928,"
Union Wages and Hours : Local Truckdrivers and Helpers
(1948).
https://fraser.stlouisfed.org/title/3960/item/494918, accessed on November 3, 2024.