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-. "1974-1978," Annual Statistical Digest (January 1980) : 291-291. https://fraser.stlouisfed.org/title/7/item/23505/toc/133618 , accessed on April 23, 2024.