Federal Reserve Bank of St. Louis. "January 1968," National Economic Trends (January 1968). https://fraser.stlouisfed.org/title/870/item/33982, accessed on March 19, 2024.
Federal Reserve Bank of St. Louis. "January 1968," National Economic Trends (January 1968). https://fraser.stlouisfed.org/title/870/item/33982, accessed on March 19, 2024.