United States. Bureau of Labor Statistics. "Area Wage Survey: The Davenport-Rock Island-Moline, Iowa-Illinois, Metropolitan Area, October 1969 : Bulletin of the United States Bureau of Labor Statistics, No. 1660-20,"
Area Wage Survey
(1970).
https://fraser.stlouisfed.org/title/4655/item/498574, accessed on March 4, 2025.
@FedFRASER