Mint Director Honors two Mint Officials with Special Award for Unusual Invention, January 16, 1970
United States. Department of the Treasury. "Mint Director Honors two Mint Officials with Special Award for Unusual Invention, January 16, 1970," in United States. Department of the Treasury. "Volume 167," Press Releases of the United States Department of the Treasury (November 7, 1969 - January 30, 1970) : 338-340. https://fraser.stlouisfed.org/title/6111/item/587010/toc/541644 , accessed on June 23, 2024.