There are 2 titles associated with this firm.

@book{ wphp_14760
  author={Gill,John},
  year={1792},
  title={The watchman’s answer to the question, What of the night? A sermon preached to the society which supported the Wednesday’s evening lecture in Great Eastcheap, December 27, 1750. By John Gill.},
  publisher={},
  address={London},    }
@book{ wphp_14726
  author={Gill,John},
  year={1793},
  title={The practical improvement of the watchman’s answer. A sermon preached to the Society which supported the Wednesday’s Evening Lecture in Great Eastcheap, January 1, 1752. And published at their Request. By John Gill, D.D.},
  publisher={},
  address={London},    }