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 1958," Federal Reserve Bulletin (February 1958) : 40-40. https://fraser.stlouisfed.org/title/62/item/21278/toc/128893 , accessed on June 24, 2024.