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-. "1992," Annual Statistical Digest (December 1993) : 199-199. https://fraser.stlouisfed.org/title/7/item/23498/toc/332902 , accessed on March 29, 2024.