United States. Department of the Treasury. "Treasury Offers $1 Billion Strip Of Monthly Bills, February 19, 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) : 68-70. https://fraser.stlouisfed.org/title/6111/item/587007/toc/541328 , accessed on June 24, 2024.