Federal Reserve Bank of Philadelphia. "July 1, 1940," Business Review (Federal Reserve Bank of Philadelphia) (July 1, 1940). https://fraser.stlouisfed.org/title/5580/item/557141, accessed on April 23, 2024.
Federal Reserve Bank of Philadelphia. "July 1, 1940," Business Review (Federal Reserve Bank of Philadelphia) (July 1, 1940). https://fraser.stlouisfed.org/title/5580/item/557141, accessed on April 23, 2024.