Federal Reserve Bank of Philadelphia. "September 1966," Business Review (Federal Reserve Bank of Philadelphia) (September 1966). https://fraser.stlouisfed.org/title/5580/item/557455, accessed on April 23, 2024.
Federal Reserve Bank of Philadelphia. "September 1966," Business Review (Federal Reserve Bank of Philadelphia) (September 1966). https://fraser.stlouisfed.org/title/5580/item/557455, accessed on April 23, 2024.