The trial of Michael Whiting [electronic resource] : for administering poison to George and Joseph Langman, of Downham, in the Isle of Ely, at the assizes holden at Ely on Wednesday the 4th of March, 1812, before Edward Christian, Esq., chief justice of the Isle / / taken in court by Thomas Leigh ; to which is added an authentic account of some important circumstances respecting Michael Whiting, from his conviction to the day of his execution