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 1 - 13 of 13Find Help Find Prior Year » RegExReplace » Product Number Prior Year » Revision Date Prior Year » Title Show per page 2550100200 SearchClear Product Number Title Revision Date Publication 947 Practice Before the IRS and Power of Attorney 2018 Publication 947 Practice Before the IRS and Power of Attorney 2015 Publication 947 Practice Before the IRS and Power of Attorney 2012 Publication 947 Practice Before the IRS and Power of Attorney 2009 Publication 947 Practice Before the IRS and Power of Attorney 2004 Publication 947 Practice Before the IRS and Power of Attorney 2002 Publication 947 Practice Before the IRS and Power of Attorney 1999 Publication 947 Practice Before the IRS and Power of Attorney 1996 Publication 947 (ko) Practice Before the IRS and Power of Attorney (Korean Version) 2018 Publication 947 (sp) Practice Before the IRS and Power of Attorney (Spanish Version) 2018 Publication 947 (vie) Practice Before the IRS and Power of Attorney (Vietnamese Version) 2018 Publication 947 (zh-s) Practice Before the IRS and Power of Attorney (Chinese-Simplified Version) 2018 Publication 947 (zh-t) Practice Before the IRS and Power of Attorney (Chinese-Traditional Version) 2018