Wage Chronology: International Harvester Co., 1946-70 : 1970-1973 Supplement : Bulletin of the United States Bureau of Labor Statistics, No. 1678
United States. Bureau of Labor Statistics. "Wage Chronology: International Harvester Co., 1946-70 : 1970-1973 Supplement : Bulletin of the United States Bureau of Labor Statistics, No. 1678," Wage Chronology: International Harvester Co. and the Auto Workers (1972). https://fraser.stlouisfed.org/title/4884/item/498658/content/pdf/bls_1678_1973_supp, accessed on April 25, 2024.