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. "February 1970," Federal Reserve Bulletin (February 1970) : 94-94. https://fraser.stlouisfed.org/title/62/item/21422/toc/161757 , accessed on April 27, 2024.