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. "May 1966," Federal Reserve Bulletin (May 1966) : 39-39. https://fraser.stlouisfed.org/title/62/item/21377/toc/139151 , accessed on April 19, 2024.