Federal Reserve Bank of Philadelphia. "June 1969," Business Review (Federal Reserve Bank of Philadelphia) (June 1969). https://fraser.stlouisfed.org/title/5580/item/557489, accessed on May 5, 2024.
Federal Reserve Bank of Philadelphia. "June 1969," Business Review (Federal Reserve Bank of Philadelphia) (June 1969). https://fraser.stlouisfed.org/title/5580/item/557489, accessed on May 5, 2024.