The United States Department of the Treasury is tasked with managing government revenue and is in charge of the Internal Revenue Service and the United States Mint, to name a few. Alexander Hamilton was the first Secretary of the Treasury, and he was instrumental in the process of working out America’s financial system in the first years.
 
 
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The United States Department of the Treasury is one of the major economic agencies of the US government. You can find out about the department's efforts to combat illegal financial activity and regulate financial markets. The Treasury website also has information on US coins and currency.
http://www.treas.gov/
Official website of the Internal Revenue Service, the US federal government agency that provides taxpayer with quality service and enforces the internal revenue laws. This website provides relevant tax statistics and information for individuals, businesses, charities and other non-profits, government entities, tax professionals as well as for the retirement plans community and tax exempt bond community. This website also provides a copy of the department's most requested forms and publications.
http://www.irs.gov
Provides a vast amount of history and information about coins, about minting coins, and about collecting coins. Additionally shares the production schedule and news about the Mint.
http://www.usmint.gov/