I had a college professor who said it was ridiculous to highlight textbooks: the material is pretty much a synopsis anyway. I took notes instead. I went through a freshman highlighty phase but it seemed so...so everybody else!
But I love old things and old books. I wonder where my parents put our old Encyclopedia Americanas. I'd like to have those.
Like the reference book (don't know what it's called, has a little bit about everything) I have that was written after THE WAR. There was no 2nd WW so it was not yet the 1st WW.