There are 2 titles associated with this firm.

@book{ wphp_25480
  author={Sophocles,},
  year={1714},
  title={Electra, A Tragedy. Translated from the Greek of Sophocles.},
  publisher={John Watts \& },
  address={London},    }
@book{ wphp_25366
  author={Dennis,John},
  year={1720},
  title={The invader of his country: or, The fatal resentment. A tragedy. As it is acted at the Theatre-Royal in Drury-Lane. By His Majesty's Servants. By Mr. Dennis},
  publisher={John Pemberton \& John Watts \& },
  address={London},    }