There are 2 titles associated with this firm.

@book{ wphp_18823
  author={Owenson,Sydney},
  year={1808},
  title={The wild Irish girl; a national tale. By Miss Owenson, author of The novice of St. Dominick, Lay of an Irish harp, &c. &c. Sixth American edition.},
  publisher={Joseph Greenleaf \& },
  address={Boston},    }
@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},    }