Possibly off topic but is there any good resource to read old newspapers, preferably searchable and in PDF format? I'd love to read about WW1 and WW2 and the in

Possibly off topic but is there any good resource to read old newspapers, preferably searchable and in PDF format? I'd love to read about WW1 and WW2 and the inventions of the 19th and 20th century as if they were news now.