Answered By: Lippincott Library Last Updated: Jun 24, 2016 Views: 14
Use Intelliconnect (formerly CCH Internet Tax Research Network). For an overview of Intelliconnect, take a look at Lippincott's Datapoints blog post Just in Time for April 15: Federal Tax Research.
For historical tax information, check out Taxation and Economic Reform in America, A Historical Archive 1781-2009
Search the IRS Tax Code, Regulations, and Official Guidance, as well as TaxStats
Use the IRS' Audit Technique Guides
Go to IRS Tax Forms and Instructions
Intelliconnect has sample business forms. Click on tools -> online forms.
Look at the Tax Policy Center