Board of Governors of the Federal Reserve System (U.S.), 1935-. "Income and Expenses of Federal Reserve Banks," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1990," Annual Statistical Digest (November 1991) : 123-124. https://fraser.stlouisfed.org/title/7/item/23496/toc/252142 , accessed on April 19, 2024.