United States. Bureau of Labor Statistics. "Industry Wage Survey: Pulp, Paper, and Paperboard Mills, November 1972 : Bulletin of the United States Bureau of Labor Statistics, No. 1844," Industry Wage Survey: Pulp, Paper, and Paperboard Mills (1975). https://fraser.stlouisfed.org/title/4627/item/499073, accessed on March 18, 2025.