United States. Department of the Treasury. "Bill Tender, March 18, 1958," in United States. Department of the Treasury. "Volume 112," Press Releases of the United States Department of the Treasury (January 2, 1958 - March 31, 1958) : 369-370. https://fraser.stlouisfed.org/title/6111/item/586955/toc/537621 , accessed on June 25, 2024.