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. "June 1970," Federal Reserve Bulletin (June 1970) : 88-88. https://fraser.stlouisfed.org/title/62/item/21426/toc/347513 , accessed on April 19, 2024.