Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Denominations in Circulation," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1970," Federal Reserve Bulletin (May 1970) : 104-104. https://fraser.stlouisfed.org/title/62/item/21425/toc/136583 , accessed on May 8, 2024.