What Could Have Been: Goblins On the Prowl was originally set to have much more pronounced references to The Dragonslayers. As Coville wrote on his guestbook, in the first draft, "Bwoonhiwda was accompanied by Queen Wilhelmina's daughter, who was named Pink. But the editor felt that the book was overpopulated and someone had to go. Alas, it was Pink who got the ax."
Miscellaneous trivia:
One of the goblins is named Borg, not to be confused with the villains from Star Trek: The Next Generation (who predate the book's publication).