[Ms. draft letter, 1829 (Nov.?), to the Liverpool and Manchester Railway Board / T. Hackworth. 4p. on 1 leaf. Letter refers to the Rainhill Trials. Because 'on a recent occasion the Locomotive Engine Sans Pareil failed in performing the task assigned to her by the Judges', he now writes to the Board detailing excellent subsequent results in testing. On SM negs. 456-9/89]