There are 8 titles associated with this firm.

@book{ wphp_69
  author={Beverley,Elizabeth},
  year={1821},
  title={A Glass for Kings. A Sermon, Proper to be Preached at the Coronation of a King. Being the Reverse of a Canterbury Tale, or a Yorkshire Story! as it is Most Faithfully Expounded from the Following Texts of Holy Writ.},
  publisher={},
  address={London},    }
@book{ wphp_10017
  author={Barbauld,Anna Laetitia},
  year={1828},
  title={Hymns in prose for children : calculated to impress the infant mind with early devotion. By Mrs. Barbauld.},
  publisher={Thomas Richardson \& },
  address={Derby},    }
@book{ wphp_10017
  author={Barbauld,Anna Laetitia},
  year={1828},
  title={Hymns in prose for children : calculated to impress the infant mind with early devotion. By Mrs. Barbauld.},
  publisher={Thomas Richardson \& },
  address={Derby},    }
@book{ wphp_10081
  author={Martin,Sarah Catherine},
  year={1830},
  title={Mother Hubbard and her dog: to which is added, The history of Tom Tucker.},
  publisher={Thomas Richardson \& },
  address={Derby},    }
@book{ wphp_10081
  author={Martin,Sarah Catherine},
  year={1830},
  title={Mother Hubbard and her dog: to which is added, The history of Tom Tucker.},
  publisher={Thomas Richardson \& },
  address={Derby},    }
@book{ wphp_11248
  author={Sandham,Elizabeth},
  year={1833},
  title={Sketches of young people, or, A visit to Brighton. By the author of The grandfather, Friendship, The schoolfellows, &c. &c.},
  publisher={Simpkin, Marshall and Co. \& Thomas Richardson \& Samuel Horsey \& Samuel Darton and Robert Harvey [1833-38] \& },
  address={London},    }
@book{ wphp_13022
  author={Brown,Eliza},
  year={1835},
  title={Children as they are; or, Tales and dialogues, for young readers from seven to twelve years of age. By the author of 'The transformation of a beech-tree.'},
  publisher={Samuel Darton and Robert Harvey [1833-38] \& Thomas Richardson \& Simpkin, Marshall and Co. \& Samuel Horsey},
  address={Derby},    }
@book{ wphp_10086
  author={d'Aulnoy,Marie-Catherine},
  year={1835},
  title={The history of the white cat : with a coloured engraving.},
  publisher={Thomas Richardson \& Robert Sears and Co.},
  address={Derby},    }