I think you have uncovered a bright solution. They tend to be expensive. Firstsurfacemirrors.com sells a foot by a foot for $50 or delphiglass.com 12"x16" for $40. Scan Tailor might be able to eliminate the ghost images but the ghost may be a problem for images on a book.Kirtai wrote:Could this be eliminated by using a first surface mirror? (That's one with the reflective coating on the front of the glass instead of the back)
Another solution other than a first surface mirror. Just like what Antoha said before, build a prism box and fill the prism box with a liquid that will act just like a prism. This might be a problem if the liquids leak for some reason... destroying your very rare book.