As the breeding program nears its conclusion, humans are selected as the best choice; at the same time, the breeding programs of the other three planets are terminated, and their penultimates never meet their planned mates. Kimball Kinnison meets and marries the product of the complementary human breeding program, Clarissa MacDougall. She is a beautiful, curvaceous, red-haired nurse, who eventually becomes the first human female to receive her own Lens. Their children, a boy and two pairs of fraternal twin sisters, grow up to be the five Children of the Lens. In their breeding, “almost every strain of weakness in humanity is finally removed.”
I know that’s Doc Smith, but I suspect that somehow, Heinlein would have approved... :P
Back when, I think I dated each of those four twins.
Written circa 1950. I love Sci Fi from that era.
Hmm, read that, thought it was fiction. O well.
Doc Smith - Author