There are 4 titles associated with this firm.

@book{ wphp_16237
  author={Unknown,},
  year={1811},
  title={Sketches of universal history, compiled from several authors. For the use of schools.},
  publisher={},
  address={New Haven},    }
@book{ wphp_18731
  author={More,Hannah},
  year={1811},
  title={The sorrows of Yamba; or, The Negro woman's lamentations. A poetic fact, describing the cruelties inflicted on the Africans by men who are destitute of humanity; in which is shewn the power of God in bringing good out of evil, by sometimes converting these captives to a better hope than that of being released from the bonds of those masters into whose hands they have fallen.},
  publisher={},
  address={New Haven},    }
@book{ wphp_15419
  author={More,Hannah},
  year={1811},
  title={The Sorrows of Yamba; Or, The Negro Woman's Lamentations. A Poetic Fact, Describing the Cruelties Inflicted on the Africans by Men who are Destitute of Humanity; : in which is Shewn the Power of God in Bringing Good Out of Evil, by Sometimes Converting These Captives to a Better Hope Than that of Being Released from the Bonds of Those Masters Into Whose Hands They Have Fallen.},
  publisher={Joseph Barber},
      }
@book{ wphp_16342
  author={Althens,Margaret Magdalen},
  year={1812},
  title={The Christian Character Exemplified, from the Papers of Margaret Magdalen Althens, Late Wife of Frederick Charles Althens, of Goodman's Fields. Selected and Revised by John Newton, Rector of St. Mary, Woolnoth.},
  publisher={},
  address={New Haven},    }