TASI contacted a number of digitisation service providers for more information about the services they supply. The following list is not an endorsement of any of the services, but is provided to help you identify services to evaluate in more detail.The list contains only nine organizations, although I would think there are more than that. I wonder how the decided who to contact for information?
Also on that page is a link to TASI's Digitisation: To Outsource or Not? This is a nice two-page document with clearly written advice. And from that page, you'll see links to other advice.
Technorati tag: Digitization