United States. Department of the Treasury. "Bill tender on monthly bills (273- and 365-day bills), November 25, 1969," in United States. Department of the Treasury. "Volume 167," Press Releases of the United States Department of the Treasury (November 7, 1969 - January 30, 1970) : 164-165. https://fraser.stlouisfed.org/title/6111/item/587010/toc/541588 , accessed on June 23, 2024.