There are 4 titles associated with this firm.

@book{ wphp_10877
  author={Unknown,},
  year={1820},
  title={A collection of birds & riddles. By Miss Polly & Master Tommy.},
  publisher={},
  address={York},    }
@book{ wphp_10999
  author={Fenn,Ellenor},
  year={1820},
  title={Mrs. Lovechild's golden present: for all good little boys and girls. Decorated with woodcuts.},
  publisher={},
  address={York},    }
@book{ wphp_10075
  author={Martin,Sarah Catherine},
  year={1820},
  title={The comic adventures of Old Mother Hubbard and her dog. Part I. Adorned with cuts.},
  publisher={},
  address={York},    }
@book{ wphp_11508
  author={Unknown,[Woman]},
  year={1820},
  title={The Mother's Gift. By a Lady.},
  publisher={},
  address={York},    }