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. "1951," Annual Report of the Board of Governors of the Federal Reserve System (1951) : 77-77. https://fraser.stlouisfed.org/title/117/item/2408/toc/99634 , accessed on April 19, 2024.