Alger published a little over one hundred boys' books, a few adult novels, and dozens of magazine stories and poems.
Maguire has written a number of clever - and far more disciplined - adult novels that play out interesting twists on children's stories.
He tried two adult novels, which were less successful, and then returned to the younger markets.
Bell has also translated into English many adult novels, as well as some books on art history, and musicology.
J.X. Williams is a pseudonym used by several different authors during the 1960s for many adult novels.
The majority of her work is dealt with adult visual novels.
According to Reid, it was more difficult for him to write children's novels than adult novels, because he "had never written down to children."
His works consist of adventure stories aimed at teenagers as well as adult novels.
He also wrote a few adult novels.
She has published 19 adult novels and 7 children's books since her first novel, All Things Nice, came out in 1969.