Getting Copyright Permissions
Intellectual Property Information Center at Kansas State University Online Tutorial on Copyright Basics
Fair use can only be determined on a case-by-case basis. There are fair use checklists (available through this website) which can be of help in applying these four factors, but if you have any doubt that your intended use may not be fair use, you should ask the owner of the copyright for permission before using the item.
Visit the “Obtaining Copyright Permissions” section of this website to download a permissions request letter or to find to help locate copyright owners and pursue copyright permissions.