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. "March 1970," Federal Reserve Bulletin (March 1970) : 132-132. https://fraser.stlouisfed.org/title/62/item/21423/toc/6404 , accessed on April 17, 2024.