Scanning world's every book means turning many, many pages

Mitchel glides in a rolling chair forth and back between scanner and computer, computer and scanner, turning page upon page and clicking her mouse to shoot each pair. Once the images reach the computer, the women use the book scanning software Omniscan from Germany's Zeutschel GmbH to clean them up.

A final click of the mouse sends each digitized book to Google for optical character recognition processing, which makes the text searchable. Google then returns a copy of the images and data to the library and posts another to the Web.

Israel, 44, who has been scanning books for three years, takes a philosophical view of the project.

"My favorite part is working with older books and being able to preserve a lot of the knowledge and help bring more people access," Israel said. "I turn pages. It's kind of meditative."