This article is a Jamesonian study of Auster's "The New York Trilogy" in which one of Fredric Jameson's notions of postmodernism, pastiche, has been applied on three stories of the novel. This novel is one of Auster's outstanding postmodern works to which Jameson's theories of postmodernism, in particular, pastiche can be applicable. Pastiche has been defined by Fredric Jameson as an imitation of a strange style and contrasted to the concept of postmodern parody. This article indicates that theory of pastiche can be applied on both the form and content of three stories of the above mentioned novel.