Copyright is a complex issue, particularly within an evolving digital environment. This page links to guidelines on course reserves, classroom copying and educational multimedia, as well as the institution's copyright policy.
In addition, the Copyright Information Center at Cornell University below provides more extensive copyright information, as well as a sample permission letter which can be modified to suit your needs.
The Weill Cornell Medical Library has many works in its collection pertaining to the subject of copyright, for those who wish to pursue the topic more intensively.
The library's Guide to Open Access provides links for authors on the NIH Public Access Policy, retaining copyright and publisher copyright policies. Additional copyright information can be found at the library's Copyright Management Guide.