There are 2 titles associated with this firm.

@book{ wphp_15385
  author={Piozzi,Hester Lynch Thrale and Swift,Jonathan and Witherspoon,John and Franklin,Benjamin and Cotton,Nathaniel and Nugent,Mr.},
  year={1798},
  title={A Series of letters on courtship and marriage. To which are added, Witherspoon's letters on marriage.-- Mrs. Piozzi's letter to a gentleman newly married.-- Swift's letter to a newly married lady, &c. &c.},
  publisher={Cornelius Davis},
  address={Springfield},    }
@book{ wphp_16225
  author={Franklin,Benjamin and Craggs-Nugent,Robert and Piozzi,Hester Lynch Thrale and Cotton,Nathaniel and Swift,Jonathan and Witherspoon,John},
  year={1798},
  title={A Series of Letters on Courtship and Marriage. To Which are Added, Witherspoon's Letters on Marriage.—Mrs. Piozzi's Letter to a Gentleman Newly Married.—Swift's Letter to a Newly Married Lady, &c. &c.},
  publisher={Cornelius Davis \& },
  address={Springfield},    }