Meeting of Joint Commission on the Coinage, May 16, 1967, Release Number f-923
United States. Department of the Treasury. "Meeting of Joint Commission on the Coinage, May 16, 1967, Release Number f-923," in United States. Department of the Treasury. "Volume 157," Press Releases of the United States Department of the Treasury (March 1, 1967 - May 31, 1967) : 704-705. https://fraser.stlouisfed.org/title/6111/item/587000/toc/540607 , accessed on June 2, 2024.