State of Wisconsin
Wisconsin Department of Revenue
http://www.revenue.wi.gov/
You can search for Wisconsin tax forms from here and also link to Wisconsin e-File.
US Tax Forms & Information
IRS Forms & Publications
http://www.irs.gov/Forms-&-Pubs
Download and print tax forms plus links to instructions.
Interactive Tax Assistance
http://www.irs.gov/uac/Interactive-Tax-Assistant-(ITA)-1
IRS Tax Map
http://taxmap.ntis.gov/taxmap/