Federal Reserve Bank of Philadelphia. "October 1966," Business Review (Federal Reserve Bank of Philadelphia) (October 1966). https://fraser.stlouisfed.org/title/5580/item/557456, accessed on March 28, 2024.
Federal Reserve Bank of Philadelphia. "October 1966," Business Review (Federal Reserve Bank of Philadelphia) (October 1966). https://fraser.stlouisfed.org/title/5580/item/557456, accessed on March 28, 2024.