Connection to King's other works
The town of Derry is mentioned several times to be near the University of Maine. Derry is a recurring setting for King's novels and short stories, like It and Insomnia.
'The Regulators' are mentioned, and appear in several stories linked with the Dark Tower universe.
When Ted has 'gone blank' he uses language that occurs often in the Dark Tower universe, as when he says "There will be water if God wills it" and "All things serve the Beam."
When Ted sends Bobby a letter toward the end of the novel, the envelope is filled with red rose petals; the Dark Tower stands in a field of red roses called Cań-Ka No Rey.
Insofar as The Dark Tower series' overall plot is concerned, it is revealed in the seventh book that Ted is essential to the Crimson King's quest to break the beams that hold the Dark Tower up, which in turn holds the universe together.
"Low men" also appear in King's novella Ur, published for Amazon's Kindle in 2009.
One of the bullies who beat Carol, Harry Doolin, shares a surname with minor characters in Wolves of the Calla, Molly and Eamon Doolin, as well as the villain John Doolin (alias Jim Dooley and ZackMcCool) in Lisey's Story.
Raymond Fiegler, who is identified near the novel's end as leader of an activist group when he prevents Carol Gerber from retrieving an unexploded bomb on a college campus, is very likely another alias of Randall Flagg, a recurring villain in many of King's works. King never identifies Fiegler as Flagg, but Christopher Golden and Hank Wagner suggest in The Complete Stephen King Universe that there is little doubt Fiegler is Flagg. Golden and Wagner cite evidence such as Fiegler's ability to make himself appear "dim" (an ability shared by Flagg in The Eyes of the Dragon), his manipulation of Carol Gerber and her activist friends and Flagg's frequent use of aliases (usually with the initials "R.F.").