There are 3 titles associated with this firm.

@book{ wphp_20989
  author={},
  year={1812},
  title={Parker & Delaplaine's American edition of the New Edinburgh encyclopaedia, conducted by David Brewster, L.L.D. Fellow of the Royal Society of Edinburgh, and of the Society of Antiquaries of Scotland. Assisted by upwards of one hundred gentlemen in Europe, most eminent in science and literature. And now improved for the greater satisfaction and better information of the people of the United States, in the civil, religious & natural history of their country in American biography & in the great discoveries in mechanics & the arts.},
  publisher={},
  address={Philadelphia},    }
@book{ wphp_16086
  author={Swift,Jonathan and Witherspoon,John and Piozzi,Hester Lynch Thrale and Franklin,Benjamin and Cotton,Nathaniel and Craggs-Nugent,Robert},
  year={1813},
  title={Letters on Courtship and Marriage. By Various Authors.},
  publisher={Daniel Fenton \& James Jefferson Wilson \& },
  address={Trenton},    }
@book{ wphp_15389
  author={Piozzi,Hester Lynch Thrale and Cotton,Nathaniel and Franklin,Benjamin and Swift,Jonathan and Witherspoon,John and Nugent,Mr.},
  year={1813},
  title={Letters on courtship and marriage: To which are added, Witherspoon's Letters on marriage.--Swift's Letter to a newly married lady. Mrs. Piozzi's Letter to a gentleman newly married, &c. &c.},
  publisher={Daniel Fenton \& James Jefferson Wilson \& },
  address={Trenton},    }