ON HAZARDOUS DUTY by David St. John (E. Howard Hunt)     Signet Books, First Printing, 1965                                                 Condition: About Very Good                                                                                                                                                              This thriller, which introduces playboy spy Peter Ward, was one of many espionage novels that E. Howard Hunt, a real-life spy (best known as one of the Watergate burglers in the '70s), wrote under his own name or one of several pseudonyms.  Some cover creasing, light wear on extremities and a name pencilled on the first page.  Else a sharp copy with a square, uncreased spine and tight binding throughout.