Possible Clues:

• "Breakfast at Tiffany's" author Truman
• American author's good books accepted by publisher
• He said Beat literature 'isn't writing at all - it's typing'
• Writer and manic-depressive top actor covers up
• US author - long cloak
• A long cloak or soldier's coat, usually with a hood
• Truman, writer
• ''Breakfast at Tiffany's ''author
• Southern writer with presidential connection?
• About time to dip into one American writer or another