These books are listed from the most recent (2024) to the least recent (1965).
From Google AI... "The Nebula Award is an annual literary prize presented by the Science Fiction and Fantasy Writers Association (SFWA) for the best science fiction and fantasy works published in the United States. It's considered one of the most prestigious awards in the science fiction and fantasy genres, alongside the Hugo Award.
The awards are given for novels, novellas, novelettes, short stories, and scripts. Works must be published in English in the United States to be eligible. The Nebula Awards are seen as a "professional" award, voted on by members of the SFWA, which includes professional writers of science fiction and fantasy."