Actually, the answer is "yes", but only a few. Information Today Inc. (ITI) gives the Library Resource Guide to participants at its conferences and makes a copy available online. I would suspect that they get several thousands of these directories in the hands of public, academic, corporate and special librarians. Perhaps a good place for digitization-related companies to be listed (especially if they added useful categories)?
Just a thought...which came to me as I flipped through the directory.
Technorati tag: Digitization