Speaking of books, Frank, it seems that there is a new book out detailing all of the equipment ever used by the Fab Four.
Has anyone anyone seen this book? It's called "Beatles Gear", by Andy Babiuk. It should have some Mellotron photos and information, if it is as complete as they say (256 pages w/ 335 photos).
Here's the link to the book on Amazon, if anyone is interested.