The Extinct Attractions Club is a group that is interested (maybe "obsessed" would be a better word) with documenting the history of theme park attractions, especially at Disneyland. They have a whole line of DVDs they've produced with rare footage of the Magic Kingdom and interviews with the folks who built or otherwise contributed to the things you could once do for a "E" ticket.
Here's a little preview of their overview of the Haunted Mansion. In it, you'll get to see some footage of the late Thurl Ravenscroft, the man with the greatest singing voice that ever existed on the planet. You know him best as Tony the Tiger but he can be heard all over Disneyland, and we're glad the Extinct Attractions folks interviewed him so extensively.
