I too had Dunninger's book when I was a kid. You may already know this but it was subsequently shown by magic historians that Dunninger actually never used some

I too had Dunninger's book when I was a kid. You may already know this but it was subsequently shown by magic historians that Dunninger actually never used some of the methods described in the book and never even performed some of the effects shown by any method. He just made some of the effects up along with their supposed methods to have more fodder to fill the book. It's a pretty fascinating story and perhaps his 'best' trick.