United States. Department of the Treasury. "Bill Tender, June 29, 1965, Release Number f-106," in United States. Department of the Treasury. "Volume 149," Press Releases of the United States Department of the Treasury (June 1, 1965 - July 30, 1965) : 407-412. https://fraser.stlouisfed.org/title/6111/item/586992/toc/539758 , accessed on June 23, 2024.