United States. Department of the Treasury. Citizens Coinage Advisory Committee , United States. Department of the Treasury and United States. Bureau of the Mint. "Meeting, May 25, 2011 : Committee Recommendations" in Citizens Coinage Advisory Committee Meetings, Recommendations, and Minutes (May 25, 2011). https://fraser.stlouisfed.org/title/7136/item/646910/content/pdf/ccac20110525recommendations, accessed on May 31, 2026.