Occupational Wage Survey: Portland, Maine, November 1961 : Bulletin of the United States Bureau of Labor Statistics, No. 1303-26
United States. Bureau of Labor Statistics. "Occupational Wage Survey: Portland, Maine, November 1961 : Bulletin of the United States Bureau of Labor Statistics, No. 1303-26," Occupational Wage Survey (1962). https://fraser.stlouisfed.org/title/4510/item/497602, accessed on March 29, 2024.