Union Wages and Hours: Motortruck Drivers and Helpers, July 1, 1957 : Bulletin of the United States Bureau of Labor Statistics, No. 1230
United States. Bureau of Labor Statistics. "Union Wages and Hours: Motortruck Drivers and Helpers, July 1, 1957 : Bulletin of the United States Bureau of Labor Statistics, No. 1230," Union Wages and Hours : Local Truckdrivers and Helpers (February 1958). https://fraser.stlouisfed.org/title/3960/item/495752, accessed on April 23, 2024.