Four of the eleven stories ("The Bullies", "Spring Fugue", "What I Do for Money", and "Dumbness is Everything") were originally printed in The New Yorker and one ("Religion") in Glimmer Train, from 1986 to 1996. The Runaway Soul stories are from the perspective of that novel's protagonist, Wiley Silenowicz.
The text describes a collection of stories published between 1986 and 1996, highlighting that four were originally published in The New Yorker and one in Glimmer Train.  It also specifies that the "Runaway Soul" stories are narrated by Wiley Silenowicz, the protagonist of the novel.