There are 2 titles associated with this firm.

@book{ wphp_744
  author={Strutt,Elizabeth},
  year={1833},
  title={Six Weeks on the Loire with a Peep into La Vendée},
  publisher={W. Simpkin and R. Marshall},
  address={London},    }
@book{ wphp_722
  author={Hill,Isabel},
  year={1834},
  title={Brother Tragedians. A Novel},
  publisher={Saunders and Otley \& },
  address={London},    }