The Polar Express: The Movie: Trip to the North Pole is a book based off of the 2004 film, The Polar Express. It is a junior novel written by Ellen Weiss.
"Straight from the silver screen comes the story of the Polar Express, with an eight-page color insert of movie scenes."
According to this book, the events of the story took place in 1955. This contradicts the film in which a magazine with the date of December 29, 1956 appears, meaning it could not have taken place earlier than 1956.