Find IRS forms, instructions, publications, and notices for prior years back to 1864. If a PDF file won't open, try downloading the file to your device and opening it using Adobe Acrobat. View more information about Using IRS Forms, Instructions, Publications and Other Item Files. Click on a column heading to sort the list by the contents of that column. Enter a term in the Find box Click the Search button Showing 1951 - 1951 of 1951Find Help Find Prior Year » RegExReplace » Product Number Prior Year » Revision Date Prior Year » Title Show per page 2550100200 SearchClear Product Number Title Revision Date Form W-9S Request for Student's or Borrower's Taxpayer Identification Number and Certification 1997 Pagination First page « First Previous page Previous … Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Current page 79