If you could get the copyright holder to release them into the public domain, then they would be a great candidate for Distributed Proofreaders. 382kpgs would

If you could get the copyright holder to release them into the public domain, then they would be a great candidate for Distributed Proofreaders. 382kpgs would still take a while (although maybe not too much if it attracted new volunteers), but it would be by far the cheapest solution.