Internal Revenue Service:

Online presence for the Internal Revenue Service with tax information for both individuals and businesses.

http://www.irs.gov

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Colorado Dept of Revenue:

Information on driver's licenses, motor vehicle registration, taxes and more.

http://www.revenue.state.co.us/main/home.asp

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Federation of Tax Administrators:

Tax Forms for all fifty states.

http://www.taxadmin.org/fta/link/forms.html

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