I am looking for English fiction (novels, short stories, novellas) that are easy to read for English learners. I am especially looking for fiction that has roughly the same level as Tracy Chevalier's Girl with a Pearl Earring and George Orwell's Animal Farm. The people that I have in mind found many of the stories in Fifty Great Short Stories (Bantam Classics, edited by Milton Crane) too difficult. (Unfortunately, I don't know what CEFR level this corresponds to. This is not for people who are attending school.)
I am not looking for simplified texts.