Federal Reserve Bank of St. Louis. "Selected Economic Indicators : Central Mississippi Valley, June 1969," Pieces of Eight (June 30, 1969). https://fraser.stlouisfed.org/title/5743/item/577853, accessed on May 6, 2024.
Federal Reserve Bank of St. Louis. "Selected Economic Indicators : Central Mississippi Valley, June 1969," Pieces of Eight (June 30, 1969). https://fraser.stlouisfed.org/title/5743/item/577853, accessed on May 6, 2024.