It doesn't surprise me that there's more documentation for ESB and JEDI, after all, they really didn't have knowledge of what a phenomenon SW would end up being, so they didn't document the behind-the-scenes stuff like they did for the other films. Plus, everything seemed to be so hectic and chaotic with the making of the first film, I guess it just wasn't a priority to document everything when they were in fear of Fox pulling the plug at any time.

That's interesting that there are no photos of the creation of the Vader costume.....the photos in the book of the various 3P0 masks are facinating.

I really do hope Rinzler does companion books for ESB and JEDI.