Board of Governors of the Federal Reserve System (U.S.), 1935-. "Money Market Mutual Funds, Unadjusted Net Flows, Millions," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "December 5, 1990," Z.1 Financial Accounts of the United States (1990-12-05) : 40-40. https://fraser.stlouisfed.org/title/93/item/69142/toc/476985 , accessed on April 25, 2024.