Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "United States Money in Circulation, by Denominations," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "June 1951," Federal Reserve Bulletin (June 1951) : 53-53. https://fraser.stlouisfed.org/title/62/item/21198/toc/66582 , accessed on April 25, 2024.