United States Department of the Treasury
http://www.ustreas.gov/

The Bureau of Engraving and Printing
http://www.moneyfactory.gov/

United States Financial Literacy and Education Commission
http://www.mymoney.gov/

Board of Governors of the Federal Reserve System
http://www.federalreserve.gov/

National Endowment for Financial Education
http://www.nefe.org/