[blackcat201]

Do anyone know any existing effort on converting these scanned image to text corpus ( probably a new OCR model needed to be developed on these old text ) ? I think it would be more usable if they are in text form in terms of search and research purpose.

[bnj]

Well when Apple releases the next OS it will automatically OCR all images, so one possibility is just downloading them all on an Apple device.

[AaronNewcomer]

It already is. I do text searches all the time here and have paid for a subscription for awhile now.