This collection of 12 short stories tackles the question of "what is reality," a typical theme of Dick. Each story takes a unique turn in Dick's life as reality collapses, is replaced by another reality, and mixes reality and fantasy.
This article introduces the title story, "A Town Not on a Map," from the short stories in the collection.
The plot begins when a man named Payne, who works at a train station, meets a customer who wants a ticket to the town of Macon Heights. However, the town of Macon Heights is not on a map and is not supposed to exist. Payne gets on the train himself to see if what he says is true. Amazingly, the train arrives in Macon Heights. Macon Heights is an eerie, gray haze. Payne finds out why it exists and how it relates to his world.
His theme is the boundary between reality and fiction and the impact of the past and the present. I'm going to blur the details because they're spoilers, but Dick portrays the city of Macon Heights as a world of possibility that's different from the world we live in. This blurring of the lines between reality and fiction is the highlight of the book.
Dick portrayed the city of Macon Heights as a world of possibility that's not only different from reality, but affects reality. I felt this was a strong manifestation of his imagination.
Overall, this is a masterpiece of Dick's early days, more fantasy than science fiction. As such, you'll enjoy the imagination, the fantasy, and the emotional finesse.