Oh dear.. you've ruined my opinion of Mr Fornai!
The quality of the pictures in his books is pretty grim but I always thought the information must be good; seems I'm wrong (again!).
Sorry to be so "tranchant" with Mr. Fornai, but I've only seen his books adding confusion, without any deep research. Everybody that writes anything risks to do mistakes: only saying nothing one has 100% the possibility to avoid mistakes...
But I've the feeling that those books are indeed only a repository of unsorted stuff: nothing added to the general knowledge, sometimes something missed, accidentally altered or mixed up...
In my opinion, he lost a great opportunity to do a good job, organizing and verifying a little more all the information he collected from old magazines. If tehy had been reliable (and perhaps he had spent some more cents on the printing), they would have been great books.