If you're talking vintage Sci-fi the first name that pops up on my radar is Isaac Asimov.
When I belonged to the Science Fiction book club in the mid 70's I fell in love with Isaac Asimov's anthologies. He was a fantastic editor of short story books from authors long forgotten.
Like a good number of his books they've not been transformed into e-book and are out of print. These three were eye opening to me at the time. Some truly great stories found in pulp magazines from the 1920's and 30's.
I read the Foundation Trilogy in high school. Asimov expanded the concept to a number of other books like he did his robot series. The fall of the Roman Empire in science fiction.