The top ranks of the Ripper Squad understood the forensic links and forecasts of death that came with the letters and tape. They knew why the letters were genuine but precisely why they were so certain was kept to themselves. The Times article above was the Police response when Phonetic Experts who probably were not conversant with all of the facts, publicly voiced their concerns to the press. Yorkshire Cops had every man and his dog on their backs by the end of 1980. A couple was seen around Saville Park in Halifax at the time of Miss Whitaker's murder,, they were never traced,,just like the ones above,, another couple who were never traced,,two couples not traced are particularly interesting when you understand that there were no sightings of any other suspect on those occasions.. One might have expected a single man to have been reported,, but, missing couples were sought after on those two occasions... For more info on the letters and handwriting see my Offbeam Images folder...