The IRS is the U.S. government agency responsible for tax collection and tax law enforcement. Contains downloadable forms, instructions, and agency publications. It also includes "The Digital Daily" an almost-humorous online newspaper.
Death and Taxes 2009 is a educational and political poster detailing information on the budget of the united states and your federal taxes. Republicans and democrats enjoy this thoughtful gift. Makes a great gift for students too.
Bill Benson's page. He researched the 16th Amdendment on which current income tax law is based, having served time in federal prison previous to writing the book for not paying his income tax.