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-. "1985," Annual Statistical Digest (October 1986) : 212-212. https://fraser.stlouisfed.org/title/7/item/23512/toc/158889 , accessed on March 27, 2023.