There are 2 titles associated with this firm.

@book{ wphp_11915
  author={Wilson,Margaret Baron},
  year={1826},
  title={Hours at Home. A Collection of Miscellaneous Poems ...},
  publisher={W. Simpkin and R. Marshall \& Fricker},
  address={London},    }
@book{ wphp_11917
  author={Wilson,Margaret Baron},
  year={1827},
  title={Hours at Home. A Collection of Miscellaneous Poems ...},
  publisher={W. Simpkin and R. Marshall \& Fricker \& Clement Chapple [59 Pall Mall]},
  address={London},    }