Board of Governors of the Federal Reserve System (U.S.), 1935-. "Checkable Deposits and Currency, Seasonally Adjusted Annual Rates," 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) : 49-49. https://fraser.stlouisfed.org/title/93/item/69142/toc/477009 , accessed on April 24, 2024.