United States. Department of the Treasury. "Treasury bill offering of $1.8 billion, March 18, 1969," in United States. Department of the Treasury. "Volume 164," Press Releases of the United States Department of the Treasury (January 22, 1969 - April 30, 1969) : 146-147. https://fraser.stlouisfed.org/title/6111/item/587007/toc/541350 , accessed on June 24, 2024.