Might be the Guinevere trilogy by Persia Woolley.
Came out in the late 80’s through the early 90’s. It’s the story of Arthur retold through the perspective of his wife Guinevere. I think the third book in the series had a kind of greenish cover like what you describe.
I'm afraid that this is a low traffic sub, though I do occasionally see a request answered, and that I'm unfamiliar with the book you're seeking. You'd be better off asking for recommendations in r/booksuggestions and r/suggestmeabook, and for the title of a book or story in r/whatsthatbook and r/tipofmytongue. (Also, IMHO it would probably be good to try one sub, then the next, not multiple subs simultaneously.) If you do get an answer for an identification request, it would be helpful if you edit your OP with the answer so we can see what it is in the preview, and that your question has been answered/solved (an excellent example: ["Child psychic reveals abilities by flunking psychic test too precisely"](https://www.reddit.com/r/whatsthatbook/comments/15jeqk6/child_psychic_reveals_abilities_by_flunking/) (r/whatsthatbook; 5 August 2023)). **For what you should include in your identification requests, see:**
* [**"Updated rules post"**](https://www.reddit.com/r/whatsthatbook/comments/148xp5n/updated_rules_post/) **(**r/whatsthatbook**; 13 June 2023)**
Caveat to the suggestions of other subreddits:
* ["Why is SciFi going dark?"](https://www.reddit.com/r/scifi/comments/147qwzl/why_is_scifi_going_dark/) (r/scifi; 12 June 2023)—this applies to many subs.
I suggest waiting out any extended blackouts and hope that the subs drop the restrictions. Good luck!
Might be the Guinevere trilogy by Persia Woolley. Came out in the late 80’s through the early 90’s. It’s the story of Arthur retold through the perspective of his wife Guinevere. I think the third book in the series had a kind of greenish cover like what you describe.
I'm afraid that this is a low traffic sub, though I do occasionally see a request answered, and that I'm unfamiliar with the book you're seeking. You'd be better off asking for recommendations in r/booksuggestions and r/suggestmeabook, and for the title of a book or story in r/whatsthatbook and r/tipofmytongue. (Also, IMHO it would probably be good to try one sub, then the next, not multiple subs simultaneously.) If you do get an answer for an identification request, it would be helpful if you edit your OP with the answer so we can see what it is in the preview, and that your question has been answered/solved (an excellent example: ["Child psychic reveals abilities by flunking psychic test too precisely"](https://www.reddit.com/r/whatsthatbook/comments/15jeqk6/child_psychic_reveals_abilities_by_flunking/) (r/whatsthatbook; 5 August 2023)). **For what you should include in your identification requests, see:** * [**"Updated rules post"**](https://www.reddit.com/r/whatsthatbook/comments/148xp5n/updated_rules_post/) **(**r/whatsthatbook**; 13 June 2023)** Caveat to the suggestions of other subreddits: * ["Why is SciFi going dark?"](https://www.reddit.com/r/scifi/comments/147qwzl/why_is_scifi_going_dark/) (r/scifi; 12 June 2023)—this applies to many subs. I suggest waiting out any extended blackouts and hope that the subs drop the restrictions. Good luck!