Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Regulatory Status of Margin Account Debt at Brokers," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "October 1968," Federal Reserve Bulletin (October 1968) : 132-132. https://fraser.stlouisfed.org/title/62/item/21406/toc/255571 , accessed on May 13, 2024.