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. "January 1972," Federal Reserve Bulletin (January 1972) : 135-135. https://fraser.stlouisfed.org/title/62/item/21445/toc/196063 , accessed on May 4, 2024.