There are 2 titles associated with this firm.

@book{ wphp_6181
  author={Fletcher,Mary Bosanquet},
  year={1785},
  title={A letter to Mons. H. L. de la Fléchère, assessor ballival of Nyon, in the canton of Berne, Switzerland, on the death of his brother, the Reverend John William de la Fléchère, twenty-five years vicar of Madeley, Shropshire.},
  publisher={},
  address={London},    }
@book{ wphp_6483
  author={Fletcher,Mary Bosanquet},
  year={1786},
  title={A letter to Mons. H. L. de la Fléchère, Assessor Ballival of Nyon, in the Canton of Berne, Switzerland, on the death of his brother, the Reverend John William de la Fléchère, twenty-five years vicar of Madeley, Shropshire.},
  publisher={},
  address={London},    }