And the experiment continues.
Return to Earth: a novel of the future (1980)
I really enjoyed this novel, one of the few that features both adults and children. Typically, adults are secondary characters for Hoover.
Galen is a colony governor while Samara is a corporate magnate's child. This one novel could easily be a Traveller campaign all on its own. Dolmen assassins kill Samara's mother, thrusting the child into the role only Elon Musk could want, sole proprietorship of North America. Galen on the other hand simply wants to retire in his sleep hometown. At the end of the day, Galen and Samara don't need to merely defeat Dolmen, they need to counter the dying earth mentality that gave rise to his group.
I reviewed Another Heaven, Another Earth (1981) back in April of 2021. It's a good book, I gave it 4 of 5 stars. But I'll skip the link to AbeBooks as a paperback is selling at $25. Too rich for my blood. If you follow the link to my review, you can keep an eye on prices without being driven to that high price point.The Bell Tree (1982) is another excellent novel, set in Hoover's default universe... which is also no available at AbeBooks. Jenny and her father discover the fossilized remains of fearsome aliens. This particular book is loaded with all kinds of details about alien lifeforms which are core to the central plot.
The Shepherd Moon: a novel of the future (1984) is a solid performer in Hoover's universe. The protagonist is Merry, the daughter of two explorers. She befriends Mike, a young boy from the Shepard Moon. Later, Merry and Sara join forces with Merry's grandfather to counteract their one-time friend Mike as he unleashes strange forces upon the Earth.
Ah, Orvis (1987). If you like robots, this one is for you. Orvis is my all-time favorite robot tasked with an impossible mission: Destroy himself. Here is the link to my 5-star review, but I'll give you a little taste of how crazy this final mission is. I have not goofed on my tenses, I believe that Orvis exists beyond the end of all time. This bot was designed for war and after one war, all of the Orvis class bots were repurposed for space exploration. Orvis went to Venus for ground exploration. Not only does he survive a hell-scape planet for a long period of time, but he survived an Earth return mission. That is insane.
The Dawn Palace: The Story of Medea (1988) is one novel I have never seen. It is one of Hoover's few historical fantasy novels.
I recently picked up a copy of Away Is a Strange Place to Be (1990) but have not reviewed it yet. So, of course, I have a link. Be careful with this link as I see some copies for 6 bucks and others for $50.