There are 3 titles associated with this firm.

Unknown , [. (1803). The vale of conway. a novel. by a lady. in four volumes. London: Ann Vernor and Thomas Hood [Poultry]
Harvey , J. (1806). The castle of tynemouth. a tale. by jane harvey, author of warkfield castle, &c. &c. in two volumes. London: Ann Vernor, Thomas Hood, and Charles Sharpe. Longman, Hurst, Rees, and Orme.
Harvey , J. (1808). The governor of belleville. a tale. by jane harvey. in four volumes. London: Ann Vernor, Thomas Hood, and Charles Sharpe.