Federal Reserve Bank of Philadelphia. "October 1969," Business Review (Federal Reserve Bank of Philadelphia) (October 1969). https://fraser.stlouisfed.org/title/5580/item/557493, accessed on April 26, 2024.
Federal Reserve Bank of Philadelphia. "October 1969," Business Review (Federal Reserve Bank of Philadelphia) (October 1969). https://fraser.stlouisfed.org/title/5580/item/557493, accessed on April 26, 2024.