There are 2 titles associated with this firm.

@book{ wphp_7623
  author={Hume,Sophia},
  year={1750},
  title={An exhortation to the inhabitants of the province of South-Carolina, to bring their deeds to the light of Christ, in their own consciences. By S. H. In which is inserted, some account of the author's experience in the important business of religion.},
  publisher={},
  address={Bristol},    }
@book{ wphp_7625
  author={Hume,Sophia},
  year={1751},
  title={An exhortation to the inhabitants of the province of South-Carolina, to bring their deeds to the light of Christ, in their own consciences. By S. H. In which is inserted, some account of the author's experience in the important business of religion.},
  publisher={},
  address={Bristol},    }