Board of Governors of the Federal Reserve System (U.S.), 1935-. "U.S. Government Marketable Securities - Ownership, by Maturity," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1974-1978," Annual Statistical Digest (January 1980) : 129-132. https://fraser.stlouisfed.org/title/7/item/23505/toc/133563 , accessed on April 25, 2024.