Board of Governors of the Federal Reserve System (U.S.), 1935-. "Money Market Fund Shares, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 11, 1980," Z.1 Financial Accounts of the United States (1980-02-11) : 38-38. https://fraser.stlouisfed.org/title/93/item/69088/toc/480132 , accessed on April 23, 2024.