There are 4 titles associated with this firm.

@book{ wphp_6990
  author={Gunning,Susannah},
  year={1791},
  title={A letter from Mrs. Gunning, addresed to His Grace the Duke of Argull. The third edition.},
  publisher={},
  address={London},    }
@book{ wphp_6816
  author={Gunning,Susannah},
  year={1791},
  title={A letter from Mrs. Gunning, addressed to His Grace the Duke of Argyll.},
  publisher={},
  address={London},    }
@book{ wphp_6857
  author={Gunning,Susannah},
  year={1791},
  title={A letter from Mrs. Gunning, addressed to His Grace the Duke of Argyll. The fourth edition.},
  publisher={},
  address={London},    }
@book{ wphp_6759
  author={Gunning,Susannah},
  year={1791},
  title={A letter from Mrs. Gunning, addressed to His Grace the Duke of Argyll. The second edition.},
  publisher={},
  address={London},    }