What novelist for children with more than three or four books to his or her name has never written a sequel? I ask because I'm surveying my books to be be reviewed for the September issue (surveying being far more entertaining than actually, you know, reviewing) and, like, six out of the seven novels are sequels. (And Jen and Martha know to keep the fantasy far, far from me so it's not that.) I thought Katherine Paterson, but then Martha pointed out that Lyddie shows up twice.
If any M.L. S. student is in need of a thesis topic, I think it would be very interesting to examine sequel-publishing over time. We've always had 'em, I know, but do publishers these days routinely encourage writers to follow a successful book with a related one? Or have they always?