There are 2 titles associated with this firm.

@book{ wphp_719
  author={Wells [née Davies, later Sumbel],Mary [later Leah]},
  year={1811},
  title={Memoirs of the Life of Mrs. Sumbel, late Wells; Of the Theatres-Royal, Drury-Lane, Covent-Garden, and Haymarket. In Three Volumes. Written by Herself. Including Her Correspondence with Major Topham, Mr. Reynold the Dramaticist, &c. &c. &c.},
  publisher={Clement Chapple [66 Pall Mall] \& },
  address={London},    }
@book{ wphp_8620
  author={Edgeworth,Maria},
  year={1811},
  title={Popular Tales. By Maria Edgeworth, author of Belinda, Castle Rackrent, &c. &c. In three Volumes. Fourth Edition.},
  publisher={Joseph Johnson and Co. \& },
  address={London},    }