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 1950," Federal Reserve Bulletin (February 1950) : 57-57. https://fraser.stlouisfed.org/title/62/item/21182/toc/120054 , accessed on April 19, 2024.