375whelenIMP,
You might check Keith Rucker's You Tube channel, Vintagemachinery.org.
He has a service similar to that you are setting up. Some while back he showed his method of copying old books, manuals, catalogs, etc., using a frame with two cameras, and it makes distortion free copies without damaging the spine of the books or having to take the pages out. It was very interesting and informative. You might find it helpful. Preserving this information is a very important goal, thanks.
Mike