I've used a wand scanner for archiving historic documents in the past, and the process was very successful. The one I used had various resolution settings, and went much higher than I ever had a need for. (I believe it was a VuPoint Magic Wand.) The limiting factors are size, and how flat you can get your book--if there's much curvature on side of the page where the binding is, the edge generally gets blurred out as the depth of focus on the little scanners is very small. Most of the things I scanned were flat documents, but I did get some good images of book and ledger pages as well.
Best of luck!
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Emily Kirk
Concept Designer
The Henry Ford
Dearborn MI