There are 2 titles associated with this firm.

@book{ wphp_25191
  author={Unknown,},
  year={1756},
  title={A form of prayer, For the use of private families, and Particular persons. Compos'd on Occasion of The late Dreadful Earthquakes, And now Publish'd Pursuant to His Majesty's pious Order, for a General Fast, to be religiously kept on the 6th of February, 1756. To which is added, An Hymn, suitable to the Occasion, for Children to learn by Heart. By a Divine of the Church of England.},
  publisher={},
  address={London},    }
@book{ wphp_2638
  author={Pitt,Villiers Clara},
  year={1758},
  title={Heads of a scheme for erecting publick magazines, to relieve the necessities of the poor, and supply England with Corn. By a person of distinction.},
  publisher={},
  address={London},    }