United States. Department of the Treasury. Citizens Coinage Advisory Committee , United States. Department of the Treasury and United States. Bureau of the Mint. "Meeting, March 20, 2007 : Committee Recommendations" in Citizens Coinage Advisory Committee Meetings, Recommendations, and Minutes (March 20, 2007). https://fraser.stlouisfed.org/title/7136/item/646898/content/pdf/ccac20070320recommendations, accessed on June 6, 2026.