In between John McGahern and John Toland who is best known for a biography of Adolf Hitler?
John McGahern: John McGahern (12 November 1934 – 30 March 2006) is regarded as one of the most important Irish writers of the latter half of the twentieth century. John Toland (author): John Willard Toland (June 29, 1912 – January 4, 2004) was an American writer and historian.
John Willard Toland