Federal Reserve Bank of Philadelphia. "June 1964," Business Review (Federal Reserve Bank of Philadelphia) (June 1964). https://fraser.stlouisfed.org/title/5580/item/557428, accessed on December 7, 2023.
Federal Reserve Bank of Philadelphia. "June 1964," Business Review (Federal Reserve Bank of Philadelphia) (June 1964). https://fraser.stlouisfed.org/title/5580/item/557428, accessed on December 7, 2023.