There are 2 titles associated with this firm.

@book{ wphp_11863
  author={Sigourney,Lydia Howard},
  year={1835},
  title={Lays of the Heart, with Oriska and Other Poems},
  publisher={Francis Knight and Son},
  address={London},    }
@book{ wphp_12503
  author={Sigourney,Lydia Howard},
  year={1835},
  title={Simple Tales for My Own Children, in Poetry and Prose.},
  publisher={Francis Knight and Son},
  address={London},    }