""The Real David Harum: The Wise Ways And Droll Sayings Of One Dave Hannum"" is a book written by Arthur T. Vance. It is a biographical account of a man named Dave Hannum, who was the inspiration for the character of David Harum in the novel of the same name by Edward Noyes Westcott. The book provides a detailed description of Hannum's life, his personality, and his famous sayings. Hannum was a successful businessman and a shrewd horse trader, and...