Federal Reserve Bank of Philadelphia. "November 1968," Business Review (Federal Reserve Bank of Philadelphia) (November 1968). https://fraser.stlouisfed.org/title/5580/item/557482, accessed on April 25, 2024.
Federal Reserve Bank of Philadelphia. "November 1968," Business Review (Federal Reserve Bank of Philadelphia) (November 1968). https://fraser.stlouisfed.org/title/5580/item/557482, accessed on April 25, 2024.