First striking of half dollars from new coinage material at U.S. Mint at Denver, Colorado, December 29, 1965, Release Number f-319
United States. Department of the Treasury. "First striking of half dollars from new coinage material at U.S. Mint at Denver, Colorado, December 29, 1965, Release Number f-319," in United States. Department of the Treasury. "Volume 152," Press Releases of the United States Department of the Treasury (December 1, 1965 - January 31, 1966) : 376-381. https://fraser.stlouisfed.org/title/6111/item/586995/toc/539898 , accessed on June 22, 2024.