United States. Department of the Treasury. "Bill tender on 365-Day T. Bills, September 25, 1964, Release Number d-1351," in United States. Department of the Treasury. "Volume 144," Press Releases of the United States Department of the Treasury (August 4, 1964 - September 30, 1964) : 400-402. https://fraser.stlouisfed.org/title/6111/item/586987/toc/539517 , accessed on June 24, 2024.