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 1973," Federal Reserve Bulletin (May 1973) : 81-81. https://fraser.stlouisfed.org/title/62/item/21461/toc/329982 , accessed on April 19, 2024.