Gershwinfan.com
http://www.gershwinfan.com/
Gershwinfan.com is a consumer-oriented site with links to published materials for the artist and fan clubs. Site also contains a message board on subjects related to the all things Gershwin.

George Gershwin
http://www.classical.net/music/comp.lst/gershwin.html
Classical Net offers a an informative article on the composer with links to focused comments on specific compositions and other relevant topics.