Federal Reserve Bank of New York. "5509. Treasury to Double Coin Production," Federal Reserve Bank of New York Circulars (June 30, 1964). https://fraser.stlouisfed.org/title/466/item/13093, accessed on March 28, 2024.
Federal Reserve Bank of New York. "5509. Treasury to Double Coin Production," Federal Reserve Bank of New York Circulars (June 30, 1964). https://fraser.stlouisfed.org/title/466/item/13093, accessed on March 28, 2024.