"The Open Content Alliance (OCA) represents the collaborative efforts of a group of cultural, technology, nonprofit, and governmental organizations from around the world that will help build a permanent archive of multilingual digitized text and multimedia content." - OCA website
Link to the OCA: http://www.opencontentalliance.org/
Link to the Internet Archive: http://www.archive.org/index.php
Please see Attachments for:
- OCA Digitization Criteria
- Music notation & OCR example