Federal Reserve Bank of Philadelphia. "July 1959," Business Review (Federal Reserve Bank of Philadelphia) (July 1959). https://fraser.stlouisfed.org/title/5580/item/557369, accessed on April 24, 2024.
Federal Reserve Bank of Philadelphia. "July 1959," Business Review (Federal Reserve Bank of Philadelphia) (July 1959). https://fraser.stlouisfed.org/title/5580/item/557369, accessed on April 24, 2024.