United States. Department of the Treasury. Citizens Coinage Advisory Committee , United States. Department of the Treasury and United States. Bureau of the Mint. "Meeting, September 19, 2017 : Federal Register Notice" in Citizens Coinage Advisory Committee Meetings, Recommendations, and Minutes (September 19, 2017). https://fraser.stlouisfed.org/title/7136/item/646938/content/pdf/ccac20170919notice, accessed on June 1, 2026.