Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Kinds Outstanding and in Circulation," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1966," Federal Reserve Bulletin (April 1966) : 100-100. https://fraser.stlouisfed.org/title/62/item/21376/toc/297295 , accessed on May 9, 2024.