Federal Reserve Bank of St. Louis. "June 1968," National Economic Trends (June 1968). https://fraser.stlouisfed.org/title/870/item/34136, accessed on April 27, 2024.
Federal Reserve Bank of St. Louis. "June 1968," National Economic Trends (June 1968). https://fraser.stlouisfed.org/title/870/item/34136, accessed on April 27, 2024.