When Jackie tells about her uncle, a writer who tried to kill his wife and kid with an axe, she is referring to Jack Torrance and the events of the story The Shining.
The little boy having a birthday party is named Gordie, a reference to Gordie LaChance from the novella The Body and movie Stand by Me (1986).
Lou Hadley's name is either a reference or suggests a relation to the character Captain of the guards Byron Hadley from another Stephen King story, The Shawshank Redemption.
The bell that rings above the door in Molly's office has been up there since Leland Gaunt had his store in the same building, from the Stephen King novel 'Needful Things'.