Certificates for coins illegal Treasury rules, June 12, 1964, Release Number d-1256
United States. Department of the Treasury. "Certificates for coins illegal Treasury rules, June 12, 1964, Release Number d-1256," in United States. Department of the Treasury. "Volume 143," Press Releases of the United States Department of the Treasury (June 1, 1964 - July 31, 1964) : 104-107. https://fraser.stlouisfed.org/title/6111/item/586986/toc/539423 , accessed on June 24, 2024.