What English author is known for a long series of novels that first started in 1971 and ended in 2015, where a portion of the novels focus on witches?
Terry Pratchett:  He is best known for his Discworld series of 41 novels. Terry Pratchett:  Pratchett's first novel, "The Carpet People", was published in 1971. Terry Pratchett:  His final Discworld novel, "The Shepherd's Crown", was published in August 2015, five months after his death.
i don't know