There are 3 titles associated with this firm.

@book{ wphp_5108
  author={Young,Mary Julia},
  year={1791},
  title={Genius and fancy; or, dramatic sketches. By a lady.},
  publisher={Henry Delahoy Symonds [Paternoster Row] \& John Gray},
  address={London},    }
@book{ wphp_5113
  author={Young,Mary Julia},
  year={1795},
  title={Genius and fancy; or, dramatic sketches. By a lady.},
  publisher={Henry Delahoy Symonds [Paternoster Row] \& John Gray},
  address={London},    }
@book{ wphp_5111
  author={Young,Mary Julia},
  year={1795},
  title={Genius and fancy; or, Dramatic Sketches: with other poems on various subjects. By Mary Julia Young. The poem of Genius and fancy, or Dramatic Sketches, wrote in 1792, was designed for a separate publication, some hundred copies printed, and many presentation ones circulated; but upon consideration, being thought rather too trivial, to appear by itself, the authoress has added the subsequent poems; and flatters herself, the candour of an indulgent Public, will make allowance for the changes that have taken place in the Dramatic World since the above period, the chief of which are the Deaths of General Burgoyne, (author of the Maid of the Oaks, the Lord of the Manor, and the Heiress,) Mrs. Webb, Mr. Baddeley, &c.},
  publisher={Henry Delahoy Symonds [Paternoster Row] \& John Gray \& W. Lee},
  address={London},    }