Board of Governors of the Federal Reserve System (U.S.), 1935-. "Commercial Paper and Bankers' Dollar Acceptances Outstanding," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1990," Annual Statistical Digest (November 1991) : 44-44. https://fraser.stlouisfed.org/title/7/item/23496/toc/252090 , accessed on May 4, 2024.