Hey man!
I'm the author of the upcoming Opryland USA book. Thanks for the plug! We've got a few book signing/discussions about the history of the park coming up. We'll have some artifacts and rare pieces of Opryland memorabilia, in addition to the choice of a free print of original park shows/rides in the vein of Disney's attraction posters. We've currently only have one scheduled for Nashville at Parnassus Books (you can find details over on OprylandUSA.com), but hopefully we'll have a few more dates to announce soon. I'm working on getting together a larger panel discussion of former park execs, employees, and some of the people that performed in the shows.
I'm not really a fan of my current OprlandUSA.com - I was in a hurry to get the book up online. Look for some updates as time permits, as it transitions into more a fully dedicated blog and wiki. I've got a few former park employees and fellow Opryland nerds that will be contributing too.