The book was $1000+ on eBay for quite some time, there was a bootleg very-poor-quality PDF that was passed around for a long time. He came to Hiller Aviation M

The book was $1000+ on eBay for quite some time, there was a bootleg very-poor-quality PDF that was passed around for a long time. He came to Hiller Aviation Museum to speak a few years ago, so I had to go. Turns out they had reprinted the book so it was only $150 or $200 or something, and I jumped at the chance to get a copy and get it autographed.