Federal Reserve Bank of St. Louis. "December 1967," National Economic Trends (December 1967). https://fraser.stlouisfed.org/title/870/item/34148, accessed on March 19, 2024.
Federal Reserve Bank of St. Louis. "December 1967," National Economic Trends (December 1967). https://fraser.stlouisfed.org/title/870/item/34148, accessed on March 19, 2024.