Board of Governors of the Federal Reserve System (U.S.), 1935-. "Statistical tables that average constant maturity yield on U.S. Treasury notes and bonds with 2 and a half years remaining until maturity will no longer be published in Federal Reserve Bulletin" in Press Releases of the Board of Governors of the Federal Reserve System
(July 2, 1986).
https://fraser.stlouisfed.org/title/9237/item/691006, accessed on October 9, 2026.