American Library Association explains fair use
https://libguides.ala.org/copyright/fairuse
Disney Parody explanation of Copyright Law and Fair Use
https://www.youtube.com/watch?v=CJn_jC4FNDo
Understanding Copyright and Fair Use
http://whatscopyright.pbworks.com/
Copyright Clarity
http://mediaeducationlab.com/copyright
Hall Davidson's Resources
http://www.halldavidson.net/downloads.html#anchor923173
US Copyright Office