There are 4 titles associated with this firm.

@book{ wphp_12825
  author={Hall,Agnes},
  year={1802},
  title={Rural Recreations; or Modern Famer's Calendar; or Monthly Instructor: Exhibiting under a comprehensive form, All the operations necessary on a farm, For every month of th year: As well as all the recent improvements in Agriculture and Rural Economy. By a Farmer.},
  publisher={Ann Vernor and Thomas Hood [Poultry] \& Thomas Hurst [Paternoster] \& },
  address={London},    }
@book{ wphp_9081
  author={Sullivan,Mary Ann},
  year={1816},
  title={Owen Castle, Or, Which is the Heroine? A Novel. In Four Volumes. Dedicated by permission to the Right Honourable Lady Combermere, By Mary Ann Sullivan, late of the Theatres Royal, Liverpool, Manchester, Newcastle, Birmingham, and Norwich.},
  publisher={W. Simpkin and R. Marshall \& },
  address={London},    }
@book{ wphp_9091
  author={du Crest de Saint-Aubin,Stéphanie Félicité},
  year={1817},
  title={Placide, A Spanish Tale. In Two Vols. Translated from Les Battuécas, of Madame de Genlis. By Alexander Jamieson.},
  publisher={W. Simpkin and R. Marshall \& },
  address={London},    }
@book{ wphp_9082
  author={Sullivan,Mary Ann},
  year={1823},
  title={Owen Castle, Or, Which is the Heroine? A Novel. In Four Volumes. By Mary Ann Sullivan, Late of The Theatres Royal, Liverpool, Manchester, Newcastle, Birmingham, and Norwich. Second Edition.},
  publisher={W. Simpkin and R. Marshall \& },
  address={London},    }