Board of Governors of the Federal Reserve System (U.S.), 1935-. "Detailed Debit and Credit Balances at Brokers Carrying Margin Accounts," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1993," Annual Statistical Digest (November 1994) : 264-264. https://fraser.stlouisfed.org/title/7/item/23499/toc/428249 , accessed on May 12, 2024.