There are 2 titles associated with this firm.

@book{ wphp_19682
  author={Sherwood,Mary Martha},
  year={1817},
  title={The history of little Henry and his bearer. From the second London edition.},
  publisher={Mark Newman \& },
  address={Andover},    }
@book{ wphp_19668
  author={Sherwood,Mary Martha and Watts,Isaac},
  year={1818},
  title={The history of little Henry and his bearer. Second Andover Edition.},
  publisher={Mark Newman \& },
  address={Andover},    }