Board of Governors of the Federal Reserve System (U.S.), 1935-. "Measures and Components on the Money Stock and Debt," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1988," Annual Statistical Digest (November 1989) : 31-34. https://fraser.stlouisfed.org/title/7/item/23494/toc/426449 , accessed on April 23, 2024.