My wife, the English and literature major/ British lit fanatic, recommends anything Victorian British. She specifically mentioned Dickens, the Bronte sisters, as well as Agatha Christie and C. S. Lewis ( not Victorian ). As far as American authors go, she recommends Edgar Allen Poe, Mark Twain, Faulkner and Byron Herbert Reece. She also recommended Hemmingway and Jack London which I had mentioned earlier.
Oh by the way, Byron Herbert Reece was a relative of my family, my Great Grandmother still remembers him and his family. They lived in the Blue Ridge Mountains in north Ga. , not far from where I am in south east Tn. I haven't got around to reading any of his works, but my wife has read several of his books and poetry and she really likes him.