Federal Reserve Bank of Philadelphia. "January 1966," Business Review (Federal Reserve Bank of Philadelphia) (January 1966). https://fraser.stlouisfed.org/title/5580/item/557447, accessed on April 24, 2024.
Federal Reserve Bank of Philadelphia. "January 1966," Business Review (Federal Reserve Bank of Philadelphia) (January 1966). https://fraser.stlouisfed.org/title/5580/item/557447, accessed on April 24, 2024.