There are 8 titles associated with this firm.

@book{ wphp_24815
  title={Early lessons. In four volumes. By Maria Edgeworth. Ninth [/Fifth] Edition.},
  publisher={Rowland Hunter \& Baldwin, C. Cradock, and W. Joy \& W. Simpkin and R. Marshall \& Thomas Hamilton and William Adams},
  address={London},    }
@book{ wphp_9600
  author={Polglase,Ann Eaton},
  title={The Shipwreck; a Tale of Arabia: And Other Poems. By A. E. P.},
  publisher={Edmund Fry \& Thomas Hamilton and William Adams \& },
  address={London},    }
@book{ wphp_15529
  title={Castle Rackrent, an Hibernian tale. Taken from facts, and from the manners of the Irish squires, before the year 1782. By Maria Edgeworth, author of Practical Education, Letters for Literary Ladies, The Parent's Assistant, &c. A New Edition.},
  publisher={Rowland Hunter \& Baldwin and C. Cradock \& Longman Rees and Co. \& Joseph Booker \& John Murray [Coventry Street] \& Seeley and Co. \& Sherwood and Co. \& George B. Whittaker \& Harding and Lepard \& A. K. Newman and Co. \& R. Scholey \& Thomas Hurst, Edward Chance, and Co. \& Saunders and Hodgson \& Thomas Tegg [73 Cheapside] \& Thomas Hamilton and William Adams \& W. Simpkin and R. Marshall \& T. Mason [Cambridge Street] \& James Duncan \& George Smith, Alexander Elder and Co. \& John Templeman [1822-9] \& },
  address={London},    }
@book{ wphp_13145
  author={Barbauld,Anna Laetitia},
  title={Hymns in prose for children. By Mrs. Barbauld. Twenty-sixth edition, enlarged and improved.},
  publisher={Baldwin and C. Cradock \& Rowland Hunter \& Thomas Hamilton and William Adams \& W. Simpkin and R. Marshall \& },
  address={London},    }
@book{ wphp_11180
  title={Little Georgina, or, Conversations for children. By the author of "Three years in Italy."},
  publisher={William Oliphant \& William Collins and Co. \& John Hatchard and Son [187 Piccadilly] \& Richard Moore Tims \& J. Nesbitt \& Thomas Hamilton and William Adams \& Waugh and Innes [1826-1836] \& Charles Chalmers and William Collins [63 Wilson Street]},
  address={Dublin},    }
@book{ wphp_11257
  title={Moral paralysis; or, The gambler. By Mrs. Barber, author of "Scenes of Life, or The Influence of Religion." "Warning and Example." "The Teacher," &c. &c.},
  publisher={James Burn \& },
  address={London},    }
@book{ wphp_10020
  author={Barbauld,Anna Laetitia},
  title={Hymns in prose for children by the author of "Lessons for children".},
  publisher={W. Simpkin and R. Marshall \& Longman, Rees, Orme, Brown, and Green \& Baldwin and C. Cradock \& Joseph Harvey and Samuel Darton \& Thomas Hamilton and William Adams \& John Souter [St. Paul's Churchyard]},
  address={London},    }
@book{ wphp_11849
  title={History and Rhyme, for Young Readers. The Four English Kings William. With Notes. By Lucy Joynes, author of "Original Poetry for Infant and Juvenile Minds," "The Sabbath: A Discourse to Children;" "Mental Pictures, in Verse, for Infants;" &c.},
  publisher={S. Bennett [Nottingham] \& Frances Houlston and Son [London] \& Thomas Hamilton and William Adams},
  address={London},    }