Richard Bachman
Richard Bachman was also referred to in Stephen King's The Dark Tower series of books. In the fifth book, Wolves of the Calla, 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, Song of Susannah, Stephen King briefly discusses his Richard Bachman pseudonym.