This is a fixed-sized problem - There are only so many documents, even if there are a lot of them. I'd suggest you set up a job on Mechanical Turk or similar,

This is a fixed-sized problem - There are only so many documents, even if there are a lot of them. I'd suggest you set up a job on Mechanical Turk or similar, and pay a small amount per page to have them re-entered in a format you can more easily read.