There are 11 titles associated with this firm.

@book{ wphp_18119
  author={Kilner,Dorothy},
  year={1801},
  title={The Rotchfords; or, The friendly counsellor: designed for the instruction and amusement of the youth of both sexes. Two volumes in one.},
  publisher={James Humphreys},
  address={Philadelphia},    }
@book{ wphp_17312
  author={Edgeworth,Maria},
  year={1804},
  title={Popular tales. By Maria Edgeworth, author of Practical education, Belinda, Castle Rackrent, Irish bulls, &c. &c.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_17312
  author={Edgeworth,Maria},
  year={1804},
  title={Popular tales. By Maria Edgeworth, author of Practical education, Belinda, Castle Rackrent, Irish bulls, &c. &c.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_18384
  author={Marcet,Jane},
  year={1806},
  title={Conversations on chymistry, in which the elements of that science are familiarly explained and illustrated by experiments, and plates.  Two volumes in one.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_18384
  author={Marcet,Jane},
  year={1806},
  title={Conversations on chymistry, in which the elements of that science are familiarly explained and illustrated by experiments, and plates.  Two volumes in one.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_18383
  author={Marcet,Jane},
  year={1809},
  title={Conversations on chymistry, in which the elements of that science are familiarly explained and illustrated by experiments and plates,  from the last London edition: the second American edition: enlarged by an appendix consisting of a description, with a plate, and the manner of using of the new hydro-pneumatic blow-pipe, invented by Mr. Joseph Cloud of the mint of the United States:  also of three disquisitions, one on dyeing, one on tanning, and one on currying},
  publisher={James Humphreys \& },
  address={Philadelphia},    }
@book{ wphp_18383
  author={Marcet,Jane},
  year={1809},
  title={Conversations on chymistry, in which the elements of that science are familiarly explained and illustrated by experiments and plates,  from the last London edition: the second American edition: enlarged by an appendix consisting of a description, with a plate, and the manner of using of the new hydro-pneumatic blow-pipe, invented by Mr. Joseph Cloud of the mint of the United States:  also of three disquisitions, one on dyeing, one on tanning, and one on currying},
  publisher={James Humphreys \& },
  address={Philadelphia},    }
@book{ wphp_17525
  author={Frank,Elizabeth},
  year={1809},
  title={Lessons for young persons in humble life: calculated to promote their improvement in the art of reading; in virtue and piety; and, particularly, in the knowledge of the duties peculiar to their stations.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_18383
  author={Marcet,Jane},
  year={1809},
  title={Conversations on chymistry, in which the elements of that science are familiarly explained and illustrated by experiments and plates,  from the last London edition: the second American edition: enlarged by an appendix consisting of a description, with a plate, and the manner of using of the new hydro-pneumatic blow-pipe, invented by Mr. Joseph Cloud of the mint of the United States:  also of three disquisitions, one on dyeing, one on tanning, and one on currying},
  publisher={James Humphreys \& },
  address={Philadelphia},    }
@book{ wphp_17537
  author={Fulhame,Elizabeth},
  year={1810},
  title={An essay on combustion, with a view to a new art of dying and painting. Wherein the phlogistic and antiphlogistic hypotheses are proved erroneous. By Mrs. Fulhame. The First American Edition.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_17537
  author={Fulhame,Elizabeth},
  year={1810},
  title={An essay on combustion, with a view to a new art of dying and painting. Wherein the phlogistic and antiphlogistic hypotheses are proved erroneous. By Mrs. Fulhame. The First American Edition.},
  publisher={},
  address={Philadelphia},    }