I was a Polaroid user for a number of years. My only regret is that I started too late, just after the SX-70, although I did use SX-70 film packs (with an exposure adjustment) in my Polaroid SLR600. I am also an amateur artist, and manipulated many instant prints to accentuate certain portions, and was saddened when I could no longer obtain the materials. In any case, I found the book fascinating, especially since the developments over the years, relying on chemical and mechanical innovations without the (not then available) use of advanced electronics and computers, managed to do what they did. And it was rewarding to read of the development of the large 20x24 and the very large "closet sized" cameras. I have seen the results of these mammoth devices and they are amazing. A very good read!