The registration and ISBN are excellent ideas, I'll do that. I'm sure there will be at least ten people wanting a copy, so plenty of redundancy. I figure I can do the initial photo downselect in a month or two, a month or two to polish my editing skills, and a couple of months to edit and assemble the book. I'm inclined to use open source tools like LaTeX, but I don't see a style file (template) readily available for a photo book. So, I'll look into Scribus and take a deep dive into Gimp for the editing. The hardest part might be choosing a printing service.