Whether you need to append a document to your publisher contract, or you're using copyrighted works that fall outside the Fair Use Doctrine, there are forms that help you communicate more easily with publishers. Download them and print or email as needed, or use them as guidelines for language you might use in conversation with publishers.
Use an addendum document when you want to negotiate with your publisher so you can retain some of your copyrights, or when you want to request non-exclusive rights with your publisher (e.g., give the publisher exclusive rights of 1st publication, and then share non-exclusive rights for more copies/distribution after 1 year.)
Read more about your author's copyrights in Retain Your Rights.
Use a copyright permission letter when you are teaching, presenting, or creating reading lists for your class and your use falls outside of the Fair Use doctrine. Determine first if you need to seek permission, and then use one of these helpful resources.
Information about Fair Use, Public Domain charts, seeking permissions and help is available at Copyright@Case.