George Harrison "My Sweet Lord" case - Excellent explanation of this widely known case
It's a Wonderful Life - This movie was in the public domain but is now back under copyright protection
Bonner, Kimberly M., editor. The Center for Intellectual Property Handbook. New York: Neal-Schumann Publishers, Inc., 2006.
Crews, Kenneth D. Copyright law for librarians and educators : creative strategies and practical solutions. 2nd edition. Chicago: American Library Association, 2006.
Russell, Carrie. Complete Copyright: an everyday guide for librarians. Chicago: American Library Association, 2006.