United States. Department of the Treasury. "Bill Tender, June 18, 1962," in United States. Department of the Treasury. "Volume 132," Press Releases of the United States Department of the Treasury (April 26, 1962 - June 29, 1962) : 425-426. https://fraser.stlouisfed.org/title/6111/item/586975/toc/538837 , accessed on June 24, 2024.