Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Denominations of United States Currency in Circulation," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "March 1961," Federal Reserve Bulletin (March 1961) : 54-54. https://fraser.stlouisfed.org/title/62/item/21315/toc/219128 , accessed on April 18, 2024.