United States. Bureau of Labor Statistics. Employee Earnings and Hours in Nonmetropolitan Areas of the South and North Central Regions, June 1965 : Bulletin of the United States Bureau of Labor Statistics, No. 1552 , Washington, D.C: U.S. Dept. of Labor, Bureau of Labor Statistics, June 1967, https://fraser.stlouisfed.org/title/4713, accessed on November 14, 2024.