Federal Reserve Bank of Philadelphia. "Joe Kosek Looks Ahead : The Hard Years - 1917 to Now," in Federal Reserve Bank of Philadelphia. "April 1956," Business Review (Federal Reserve Bank of Philadelphia) (April 1956) : 3-7. https://fraser.stlouisfed.org/title/5580/item/557330/toc/522860 , accessed on May 4, 2024.