Went to a local used bookstore today and stumbled upon Disneyland The First Thirty Years (book on the right) The book on the left is Disneyland The First Quarter Century. Both books are pretty much carbon copies of each other except 30 years has a few photos of the Fantasyland rebuild in the early 80s.
Here's a couple more from my collection:
I also have Pictorial Souvenir books from 1988, 1994 (1993 edition), and 2004 (copyright 2002).
Are there any 50th anniversary books out or 50th Pictorial Souvenirs?