There are 2 titles associated with this firm.

@book{ wphp_7730
  author={Harrison,Susannah},
  year={1780},
  title={Songs in the night; by a young woman under deep afflictions.},
  publisher={Robert Hawes \& Thomas Vallance \& Alexander Hogg},
  address={London},    }
@book{ wphp_7734
  author={Harrison,Susannah},
  year={1781},
  title={Songs in the night; by a young woman under heavy afflictions. Second edition, with some additions.},
  publisher={},
  address={London},    }