United States. Department of the Treasury. Citizens Coinage Advisory Committee , United States. Department of the Treasury and United States. Bureau of the Mint. "Meeting, June 18, 2008 : Minutes" in Citizens Coinage Advisory Committee Meetings, Recommendations, and Minutes (June 18, 2008). https://fraser.stlouisfed.org/title/7136/item/646876/content/pdf/ccac20080618minutes, accessed on May 15, 2026.