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. "July 1970," Federal Reserve Bulletin (July 1970) : 66-66. https://fraser.stlouisfed.org/title/62/item/21427/toc/64502 , accessed on April 19, 2024.