Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "U.S. Treasury Bills held in the System Open Market Account," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1999," Federal Reserve Bulletin (April 1999) : 21-21. https://fraser.stlouisfed.org/title/62/item/20923/toc/65578 , accessed on May 4, 2024.