This might prove too much, particularly for the case of literature. There were people writing commercially successful and culturally relevant literary fiction in 1970; back then you already had Austen and Tolstoy and Dostoevsky and Cervantes, plus Joyce and Woolf and Hemingway and Faulkner. I think there’s books published in the last 50 years that deserves a place on a short list of Best Novels, but I don’t think it has much overlap with the best-selling literary fiction being published at that time.