Federal Taxes

General Information
A variety of free publications on such subjects as record keeping, withholding taxes, estimated taxes, and self-employment taxes, as well as detailed information on taxes for sole proprietorships, partnerships, and corporations, may be requested by calling the Internal Revenue Service (IRS) Taxpayer Assistance line toll free at 1-800-424-1040.  The regional IRSService Center for Ohio is located in Cincinnati.  The address is:
IRS
Cincinnati, OH  45999
http://www.irs.ustreas.gov/businesses/index.html