United States. Bureau of Labor Statistics. "Industry Wage Survey: Men's and Boys' Shirts (except Work Shirts) and Nightwear, October 1968 : Bulletin of the United States Bureau of Labor Statistics, No. 1659," Industry Wage Survey: Men's and Boys' Shirts (1970). https://fraser.stlouisfed.org/title/4611/item/498554, accessed on March 25, 2025.