My grandfather (born well before the 50s, but still) was a professor his entire career and I can't a single (unambiguous) publication of his online. I would not

My grandfather (born well before the 50s, but still) was a professor his entire career and I can't a single (unambiguous) publication of his online. I would not be surprised to learn there were no papers, although I believe a book chapter occurred at some point. My father, born in the 50s and like another commenter discussed primarily involved in industry, appears to have three or four.