Die größte Geschichte aller Zeiten
He was author, co-author or editor of over 60 books, including books on games and puzzles, and a number of reference works, some of which are still in print. He edited W. Somerset Maugham's "Great Novelists and their Novels" (Winston, 1948) and Fulton Oursler's "The Greatest Story Ever Told" (Doubleday, 1949).