There are 23 titles associated with this firm.

@book{ wphp_12007
  author={Hoare,Sarah and Wakefield,Priscilla},
  year={1818},
  title={An introduction to Botany, in a series of familiar letters. with illustrative engravings. By Priscilla Wakefield, author of "Mental Improvement," "Juvenile Travellers," &c. Corrected, to which is added, The Pleasures of Botanical Pursuits. A poem. By Sarah Hoare.},
  publisher={Robert Baldwin, Charles Cradock, and William Joy \& Sherwood, Neely, and Jones \& Longman, Hurst, Rees, Orme, and Brown \& John Harris [1802-1819, 1824-1843] \& Simpkin, Marshall and Co. \& Darton, Harvey, and Co. [printers] \& B. Reynolds \& },
  address={London},    }
@book{ wphp_12447
  author={Richardson,Caroline E.},
  year={1828},
  title={Poems, By Mrs. G. G. Richardson, Dumfries.},
  publisher={Robert Cadell and Co. [41 St. Andrew Street] \& Simpkin, Marshall and Co. \& William Crofts \& },
  address={Edinburgh},    }
@book{ wphp_12448
  author={Richardson,Caroline E.},
  year={1828},
  title={Poems, By Mrs. G. G. Richardson, Dumfries. Second edition.},
  publisher={Robert Cadell and Co. [41 St. Andrew Street] \& Simpkin, Marshall and Co. \& William Crofts \& },
  address={Edinburgh},    }
@book{ wphp_15364
  author={Richardson,Caroline E.},
  year={1828},
  title={Poems. By Mrs. G. G. Richardson, Dumfries.},
  publisher={Robert Cadell and Co. [41 St. Andrew Street] \& Simpkin, Marshall and Co. \& John Sinclair},
  address={Edinburgh},    }
@book{ wphp_12406
  author={Richardson,Caroline E.},
  year={1829},
  title={Poems. By Mrs. G. G. Richardson, Dumfries.},
  publisher={Robert Cadell and Co. [41 St. Andrew Street] \& Simpkin, Marshall and Co. \& John Sinclair},
  address={Edinburgh},    }
@book{ wphp_40
  author={Johnstone,Christian Isobel},
  year={1831},
  title={Lives and Voyages of Drake, Cavendish, and Dampier: including an introductory view of the earlier discoveries in the South Sea, and the history of the buccaneers with portraits engraved by Horsburgh},
  publisher={Thomas Oliver and George Boyd [High Street] \& Simpkin, Marshall and Co. \& William Jackson [Bryanstone Street] \& },
  address={Edinburgh},    }
@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_24837
  author={Opie,Amelia and Muir,Reverend William and Huie,Richard and Greville,Robert Kaye and Terrot,Reverend Charles Hughes and Montgomery,James and Bridges,Charles and McGavin,William and Hetherington,William Maxwell and Barton,Bernard and Edmeston,James and Erskine,Charlotte and Turnbull,Robert and Smyth,J. and Gurney,Joseph John and Clark,Alexander and Bell,G.M. and Watson,Charles and Sandford,John and Russell,David and Fraser,Donald and Sandford,Elizabeth and Belfrage,Henry and Raffles,Reverend Thomas and Jeffrey,James and of Hedgefield,Mrs. Margaret Mackay and Edwards,John and Reade,Thomas Shaw Bancroft},
  year={1833},
  title={The Amethyst: or Christian's Annual for M.DCCC.XXXIII. Edited by Richard Huide, M.D. and Robert Kaye Greville, LL.D.},
  publisher={William Oliphant \& William Collins [Candlerigg Court] \& Simpkin, Marshall and Co. \& William Curry, Jun. & Co.},
  address={Edinburgh},    }
@book{ wphp_319
  author={Hemans,Felicia},
  year={1834},
  title={National Lyrics, and Songs for Music. By Felicia Hemans.},
  publisher={Simpkin, Marshall and Co. \& William Curry, Junior \& },
  address={Dublin},    }
@book{ wphp_11641
  author={Unknown,},
  year={1835},
  title={An Alphabet of Animals. By a Lady. Revised edition.},
  publisher={Simpkin, Marshall and Co. \& Winks and Son},
  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_14402
  author={Child,Lydia Maria Francis},
  year={1835},
  title={The history of the condition of women, in various ages and nations. By Mrs. D. L. Child, author of "Mother's Book," "Frugal Housewife," etc.},
  publisher={Simpkin, Marshall and Co. \& },
  address={London},    }
@book{ wphp_1523
  author={Follen,Eliza Lee Cabot},
  year={1835},
  title={The Sceptic. By Mrs. Follen, Author of ‘The Well-Spent Hour,’ &C.},
  publisher={Simpkin, Marshall and Co. \& John Mardon [St. Martin's-Le-Grand]},
  address={London},    }
@book{ wphp_1525
  author={Savage,Sarah},
  year={1835},
  title={Trial and Self-Discipline. By Miss Savage, Author of ‘James Talbot,’ ‘The Factory Girl,’ &C.},
  publisher={Simpkin, Marshall and Co. \& },
  address={London},    }
@book{ wphp_1526
  author={Lee,Hannah Farnham Sawyer},
  year={1836},
  title={The Backslider.},
  publisher={},
  address={London},    }
@book{ wphp_9442
  author={Barbauld,Anna Laetitia and Aikin,John},
  year={1836},
  title={Evenings at home; or, the juvenile budget opened. Consisting of a variety of miscellaneous pieces, for the instruction and amusement of young persons; by Dr. Aikin and Mrs. Barbauld. Fifteenth edition. Carefully revised and corrected throughout by Arthur Aikin, Esq. F.L.S., &c., and Miss Aikin, with some additional pieces, by the authors. Illustrated with fine engravings after Harvey.},
  publisher={Rowland Hunter \& Joseph Booker \& Thomas Hamilton, William Adams, and Co. \& John Murray II [Albemarle] \& Longman, Rees, Orme, Brown, and Green \& George Smith, Alexander Elder and Co. \& Robert Baldwin and Charles Cradock \& Simpkin, Marshall and Co. \& Samuel Darton and Robert Harvey [1833-38] \& },
  address={London},    }
@book{ wphp_11189
  author={Bayley,Diana},
  year={1836},
  title={Henry, or, The juvenile traveller: a faithful delineation of a voyage across the Atlantic in a New York packet: a description of a part of the United States, manners and customs of the people, a journey to Canada, with an account of the colonies, emigration, sketches of society, expenses of travelling, scenery, etc., etc. By the Wife of a British officer, resident in Canada.},
  publisher={Simpkin, Marshall and Co. \& },
  address={London},    }
@book{ wphp_1527
  author={Sedgwick,Catharine Maria},
  year={1836},
  title={Home. By Miss Sedgwick, Author of “Redwood,” “Hope Leslie,” &c.},
  publisher={Simpkin, Marshall and Co. \& },
  address={London},    }
@book{ wphp_12986
  author={Barbauld,Anna Laetitia},
  year={1836},
  title={Hymns in prose for children by the author of "Lessons for children".},
  publisher={Thomas Hamilton, William Adams, and Co. \& Longman, Rees, Orme, Brown, and Green \& Robert Baldwin and Charles Cradock \& Simpkin, Marshall and Co. \& John Souter [St. Paul's Churchyard] \& Samuel Darton and Robert Harvey [1833-38] \& },
  address={London},    }
@book{ wphp_14992
  author={Hoding,Sarah},
  year={1836},
  title={The Land Log-Book; a Compilation of Anecdotes and Occurrences Extracted from the Journal Kept by the Author, during a Residence of Several Years in the United States of America. Containing Useful Hints to Those Who Intend to Emigrate to that Country. By Sarah Hoding.},
  publisher={Simpkin, Marshall and Co. \& },
  address={London},    }
@book{ wphp_1441
  author={Unknown,},
  year={1836},
  title={The Son of Duplicity; or, the still small voice.},
  publisher={James Ridgway and Sons [169 Piccadilly] [1826, 1834–1841] \& Simpkin, Marshall and Co.},
  address={London},    }
@book{ wphp_457
  author={Johnstone,Christian Isobel},
  year={1836},
  title={True Tales of the Irish Peasantry as Related by Themselves; Selected by Mrs. Johnstone from the Report of the Poor-Law Commissioners},
  publisher={William Tait \& Simpkin, Marshall and Co. \& James Ridgeway \& John Cumming},
  address={Edinburgh},    }
@book{ wphp_15005
  author={Knott,Mary},
  year={1836},
  title={Two Months at Kilkee, a Watering Place in the County of Clare, Near the Mouth of the Shannon, with an Account of a Voyage down that River from Limerick to Kilrush, and Sketches of Objects of Interest in the Neighbourhood, Which Will Serve as a Guide to the Coast Scenery. By Mary John Knott, with Engravings, &c..},
  publisher={William Curry Jun. and Co. \& Richard Moore Tims \& G. Ridings \& C. O'Brien \& Z.M. Ledger \& G. M'Kern \& Edmund Fry and Son \& Richard Groombridge \& Simpkin, Marshall and Co. \& George Davy \& Joseph Davenport \& Fraser and Co. \& },
  address={Dublin},    }