Frank Wildhorn is a man that exceeds explanation when it comes to his accomplishments. He has adapted several famous literary works into well-received (at least by fans) stage musicals, including The Strange Case of Dr. Jekyll and Mr. Hyde, Alice's Adventures in Wonderland, and Bram Stoker's Dracula. He has composed every single one of his works, and has been nominated for three Tonys and three Drama Desk Awards. He is a credit to the performing arts, and I think he deserves a place on this site because of his accomplishments.
Frank Wildhorn's official blog/website. It has every aspect of information concerning his career, a biography, a list of his works and projects, and even a photo gallery and mailing list.
I'm sorry, but I consider Wikipedia to be a legitimate resource if its connecting resources are legitimate. The Wikipedia page has many interesting and informative facts about Wildhorn, and even goes into detail about Wonderland (a personal favorite of mine).
A little page with a list of his works, related news, and related links to actors that have worked with him. BroadwayWorld is useful when it comes to learning about composers and directors as well as actors, and Frank Wildhorn's page is chock-full of information.