Some months back an article was posted here about the Library of Congress’s newspaper digitization technology:

https://arxiv.org/abs/2005.01583

https://news-navigator.labs.loc.gov/

What they have done already is great:

https://chroniclingamerica.loc.gov/newspapers/

I’ve used it quite a bit and they have some of the best OCR results I’ve ever encountered when it comes to scanned newspapers. But it’s just the tip if the iceberg. Historical newspapers seems to be one of the largest corpuses of material yet to be digitized.