Board of Governors of the Federal Reserve System (U.S.), 1935-. "Currency and Checkable Deposits, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 24, 1981 : Annual Revisions," Z.1 Financial Accounts of the United States (1981-08-24) : 39-39. https://fraser.stlouisfed.org/title/93/item/69066/toc/481005 , accessed on June 21, 2024.