United States. Department of the Treasury. "Bill Tender, March 5, 1963, Release Number d-773," in United States. Department of the Treasury. "Volume 135," Press Releases of the United States Department of the Treasury (January 2, 1963 - March 27, 1963) : 576-586. https://fraser.stlouisfed.org/title/6111/item/586978/toc/539091 , accessed on June 22, 2024.