United States. Bureau of Labor Statistics. "Area Wage Survey: Davenport-Rock Island-Moline, Iowa-Illinois, Metropolitan Area, February 1981 : Bulletin of the United States Bureau of Labor Statistics, No. 3010-7," Area Wage Survey (June 1981). https://fraser.stlouisfed.org/title/4655/item/582178, accessed on November 26, 2024.