Hi Bob -
This is a great idea and that's a web service I did not know about. What resolution are you scanning at? The one pub I looked at was a little fuzzy.
Compare that to
http://tinyurl.com/cwryp6z which is on my carlibrary.org Frazer Nash digital library. It uses the free Greenstone and Ubuntu software and runs right from an old computer on my desktop.
Just now I'm working on a library/collection for a major car museum. It's likely to be the first real, working library of its type.
Bob