I'm actually wondering about archives like what the authors of some of the books I've purchased. I've tried to find some of them online (or at least info about them), but I've come up kind of dry. But then again, I sort of doubt that ones like the Gerry Belzer or Stan Piet archives would deal with individual purchases (they seem to more like licensing their images for books and publications). I've also seen references to the National Archives and Archives of the USAF for some of those works as well.