Federal Reserve Bank of Philadelphia. "August 1968," Business Review (Federal Reserve Bank of Philadelphia) (August 1968). https://fraser.stlouisfed.org/title/5580/item/557479, accessed on May 1, 2024.
Federal Reserve Bank of Philadelphia. "August 1968," Business Review (Federal Reserve Bank of Philadelphia) (August 1968). https://fraser.stlouisfed.org/title/5580/item/557479, accessed on May 1, 2024.