Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Gross Public Debt, by Type of Security," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "February 1974," Federal Reserve Bulletin (February 1974) : 147-147. https://fraser.stlouisfed.org/title/62/item/21470/toc/371568 , accessed on May 10, 2024.