If you can scan it into a TIFF, upon opening it (as a TIFF) you’ll get OCR software included. It will turn the scan into a Word doc, although be warned, it’s not perfect and you will need to reformat, perhaps heavily. Also check every word if accuracy is important. But it does save a lot of time if you’d just have to retype it otherwise.
I have done this on WinXP on several different systems. Not sure if it’s universal to all versions of Windows Imaging or just my computers happened to have it.
SimpleOCR has a stand alone freeware OCR prog to demo their OCR SDK. Don’t know if it’s any good. (I installed it, then found I’d got an OCR bundled with something else)
You have to register to download and the free version doesn’t handle handwriting
You said in the OP that you’re going to scan the book. Doesn’t your scanner have some variety of OCR software. I bought a fairly cheap (<$100) Canon 4400F recently, and it has OCR software bundled on the CD. Also, if you can find yourself a copy of Adobe Acrobat Pro, it has OCR included.
Distributed Proofreading has an OCR pool that will accept scans from anyone, and run it thru their high-quality, professional OCR programs, and then send it on to the DP proofreading process and on to Project Gutenberg.
So when you have scans, they will do the OCR for you.
The people at Distributed Proofreaders who do OCR work (not me, mostly) keep a close eye on open-source OCR projects, and so far, haven’t found one that they recommend.
To quote the site administrator
But often a version that is one or two releases behind the current version works fine for their proofreading needs, and many people obtain such an older version for a very cheap price from ebay or similar sites.