Richard Bachman was also referred to in Stephen King's "The Dark Tower" series of books. In the fifth book, "," the scary children's book "Charlie the Choo Choo" is said to be written by "Claudia y Inez Bachman." The spelling discrepancy of the added 'y' was later explained as a deus ex machina on the part of "The White" (a force of good throughout King's "Tower" series) to bring the total number of letters in her name to nineteen, a number prominent in King's series. In the next novel of the series, "," Stephen King briefly discusses his Richard Bachman pseudonym.