Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Margin Requirements," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "October 1956," Federal Reserve Bulletin (October 1956) : 58-58. https://fraser.stlouisfed.org/title/62/item/21262/toc/278478 , accessed on April 19, 2024.