There are 2 titles associated with this firm.

@book{ wphp_19912
  author={Somerville,Elizabeth and Addison,Joseph},
  year={1808},
  title={The history of little Phoebe, the reclaimed child. And The old woman's story.},
  publisher={George Jansen \& Lewis B. Jansen},
  address={New York},    }
@book{ wphp_21478
  author={Owenson,Sydney},
  year={1808},
  title={The lay of an Irish harp; or Metrical fragments. By Miss Owenson.},
  publisher={Ezra Sargeant \& David Longworth \& George Jansen \& Alsop, Brannan and Alsop \& Matthias Ward \& Evert Duyckinck [110 Pearl Street] \& Joseph Osborn \& T. and J. Swords \& Campbell and Mitchell \& Margaret Harrisson \& Samuel A. Burtus \& Benjamin Crane \& },
  address={New York},    }