OK, he didn't write FOR kids, but what kid doesn't like sci-fi?

https://www.hollywoodreporter.com/news/general-news/william-f-nolan-sci-fi-author-logans-run-dies-at-93-1234984428/

Excerpt:

....The book told the story of a dome-encased population in the year 2116 where people are allowed every indulgence they can imagine, but with a catch — they will be euthanized at the age of 21 to control the population. The groundbreaking novel would be turned into the classic 1976 MGM picture, starring Michael York...

https://locusmag.com/2021/07/william-f-nolan-1928-2021/

First paragraphs:

Author William F. Nolan, 93, died July 15, 2021 in the hospital of complications from an infection. Nolan was best known for the Logan’s Run series of science fiction novels, the first of which was adapted into a film and TV series.

William Francis Nolan was born March 6, 1928 in Kansas City, MO, and moved with his family to California when he was 19. He trained as a visual artist, and attended the Kansas City Art Institute from 1946-47, San Diego State College from 1947-48, and Los Angeles City College in 1953. He was married once, to Marilyn Seal (AKA Cameron Nolan).

Nolan worked as a writer and designer of greeting cards for Hallmark, a painter of murals, an aircraft assistant, and at various other jobs in the ’40s and ’50s. In 1956, he became a freelance writer. In addition to his fiction and TV writing, Nolan has been an editor for and contributor to auto and racing magazines, and a book reviewer.

Nolan became active in SF fandom in the ’50s, helping found the San Diego Science Fantasy Society, contributing substantially to the fanzine Rhodomagnetic Digest, publishing and editing Ray Bradbury Review, working with “The Group,” a coterie of up-and-coming young writers which included Bradbury, Richard Matheson, Charles Beaumont, John Tomerlin, George Clayton Johnson and others, and later served as Managing Editor of the first three issues of Gamma (1963-1964)....

http://www.williamfnolan.com/

http://en.wikipedia.org/wiki/William_F._Nolan

http://www.imdb.com/name/nm0634368/
(filmography - to my surprise, he appeared in the Roger Corman movie
"The Intruder"! Along with William Shatner.)

https://www.fantasticfiction.com/n/william-f-nolan/
(book covers)

https://groups.google.com/g/rec.arts.books.childrens/c/vjwX-Yl93Uw/m/ytLgJpuYBQAJ
(birthday tribute from 2018, with booklist, book reviews, interviews, videos, etc.)

Lenona.