Board of Governors of the Federal Reserve System (U.S.), 1935-. "Growth of Major Debt Aggregates, (Billions of dollars, Outstanding)," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "December 2, 1988," Z.1 Financial Accounts of the United States (1988-12-02) : 11-11. https://fraser.stlouisfed.org/title/93/item/69102/toc/476119 , accessed on April 24, 2024.