Heinlein. He far from unknown, but he should get even more recognition. Stranger in a strange Land is a deeply philosophical book wrapped in a scifi page turner.
Philip K. Dick is also not as famous as he should be. In particular with The Man in the high Castle, pure poetry!
Wow, that’s great news! Thanks for sharing! I read my father’s version, so definitely older than 1991.
I just started reading The Moon is a harsh Mistress, I’m hope it keeps up with the hype.