There are 3 titles associated with this firm.

Unknown, [Woman]. The Vale of Conway. A Novel. By a lady. In four volumes. London: Ann Vernor and Thomas Hood [Poultry], 1803.
Harvey, Jane. 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, 1806.
Harvey, Jane. The Governor of Belleville. A Tale. By Jane Harvey. In Four Volumes. London: Ann Vernor, Thomas Hood, and Charles Sharpe, 1808.