Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Kinds of Money in Circulation," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1937," Federal Reserve Bulletin (December 1937) : 59-59. https://fraser.stlouisfed.org/title/62/item/20996/toc/74194 , accessed on April 18, 2024.