LETTER 1 filename1.txt Mail Stop 4561 August 4, 2005 R. Halsey Wise President and Chief Executive Officer Intergraph Corporation One Madison Industrial Park Huntsville, Alabama 35894 Re: Form 10-K for Fiscal Year Ended December 31, 2004 Filed March 16, 2005 File No. 000-09722 Form 10-Q for Fiscal Quarter Ended March 31, 2005 Filed May 10, 2005 File No. 000-09722 Dear Mr. Wise: We have completed our review of your Form 10-K and related filings and do not, at this time, have any further comments. Sincerely, Craig Wilson Senior Assistant Chief Accountant