Occupational Wage Survey: Chicago, Illinois, April 1961 : Bulletin of the United States Bureau of Labor Statistics, No. 1285-66
United States. Bureau of Labor Statistics. "Occupational Wage Survey: Chicago, Illinois, April 1961 : Bulletin of the United States Bureau of Labor Statistics, No. 1285-66," Occupational Wage Survey (July 1961). https://fraser.stlouisfed.org/title/4510/item/495916, accessed on June 3, 2024.