Paul Fatout retired in 1965 as a professor emeritus of English at Purdue University, where he taught for thirty-eight years. Best known as an expert in Mark Twain, he has published seven books and numerous articles in the fields of American literature and American history, his twin interests. Paul Fatout retired in 1965 as a professor emeritus of English at Purdue University, where he taught for thirty-eight years. Best known as an expert in Mark Twain, he has published seven books and numerous articles in the fields of American literature and American History, his twin interests.