Federal Reserve Bank of Cleveland. "May 1968," Economic Review (Federal Reserve Bank of Cleveland) (May 1968). https://fraser.stlouisfed.org/title/1328/item/4176, accessed on March 28, 2024.
Federal Reserve Bank of Cleveland. "May 1968," Economic Review (Federal Reserve Bank of Cleveland) (May 1968). https://fraser.stlouisfed.org/title/1328/item/4176, accessed on March 28, 2024.