Board of Governors of the Federal Reserve System (U.S.), 1935-. "U.S. Reserve Assets," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1980," Annual Statistical Digest (November 1981) : 139-139. https://fraser.stlouisfed.org/title/7/item/23507/toc/300822 , accessed on June 26, 2024.