There are 2 titles associated with this firm.

@book{ wphp_11228
  author={Cope,Harriet},
  year={1822},
  title={Waterloo, a Poem, in Two Parts: Inscribed by Permission, to His Grace the Duke of Wellington &c. &c. by his Respectful and Obliged Humble Servant, the Author of Triumphs of Religion; Suicide, a Poem; and other works.},
  publisher={John Hatchard and Son [187 Piccadilly] \& },
  address={London},    }
@book{ wphp_12022
  author={Wilson,Lucy Sarah Atkins},
  year={1824},
  title={A Visit to Grove Cottage: for the Entertainment and Instruction of Children.},
  publisher={John Harris and Son \& },
  address={London},    }