FOR IMMEDIATE RELEASE: Mint to Resume the Manufacture and Sale of Proof Sets, September 1, 1967
United States. Department of the Treasury. "FOR IMMEDIATE RELEASE: Mint to Resume the Manufacture and Sale of Proof Sets, September 1, 1967," in United States. Department of the Treasury. "Volume 159," Press Releases of the United States Department of the Treasury (September 1, 1967 - November 29, 1967) : 3-4. https://fraser.stlouisfed.org/title/6111/item/587002/toc/540632 , accessed on May 5, 2024.