Whilst all of this gives excellent detail re the actual event we still haven't got a copy of the original broadside of the ballad requested unfortunately. There must have been one but perhaps it never survived. The ballad does turn up in various places in England so several printings is likely unless it was by someone like Harkness of Preston who was distributing copies by train all over the country by then. With Kent bordering on London one of the London printers is the likely culprit, but the trial was widely reported in newspapers at the time.