Spent a good chunk of bank holiday reading this today - I think this may be one of the best collecting books out there. I was expecting another book of reference pics with general information - all very useful and how most of the other collecting books are presented, but not so good for the collector with no interest in proofs.
The book does has great reference pics but the interviews and insight into the Kenner manufacturing process and toy designing in general is amazing, and makes the book a must have even if you have no interest in proofs.
Anyone that has yet to buy Mattias' book is missing out on a lot of great info - buy it now!