Internet Archive Scholar
This is amazing.  Some of my grandfather's papers are on there. [1]  He was a medical missionary in China and India.  I doubt anyone in my family has had a chance to see these before.  Quite a gift.  I'm trying to get my grandmother's books onto there as well at some point.[1] - https://scholar.archive.org/search?q=%22Frederick+G.+Scovel%...