Board of Governors of the Federal Reserve System (U.S.), 1935-. "Money Market Mutual Fund Shares, Unadjusted Net Flows," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 10, 1989," Z.1 Financial Accounts of the United States (1989-03-10) : 51-51. https://fraser.stlouisfed.org/title/93/item/69113/toc/476277 , accessed on April 19, 2024.