There are 2 titles associated with this firm.

@book{ wphp_19101
  author={Porter,Jane},
  year={1810},
  title={The Scottish chiefs, a romance. : Five volumes in two. By Miss Jane Porter, author of Thaddeus of Warsaw, and Remarks on Sidney's aphorisms. (From the London edition of 1810.)},
  publisher={David Longworth \& },
  address={New York},    }
@book{ wphp_18645
  author={More,Hannah},
  year={1811},
  title={Practical piety; or, The influence of the religion of the heart on the conduct of the life. By Hannah More.},
  publisher={Charles Williams \& },
  address={Boston},    }