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 27, 2011 : Minutes" in Citizens Coinage Advisory Committee Meetings, Recommendations, and Minutes (June 27, 2011). https://fraser.stlouisfed.org/title/7136/item/646883/content/pdf/ccac20110627minutes, accessed on June 11, 2026.