There are 16 titles associated with this person.

Hays, Mary. Letters and essays, moral, and miscellaneous. By Mary Hays. London: Thomas Knott [Lombard Street], 1793.
Hays, Mary. Memoirs of Emma Courtney. By Mary Hays. In two volumes. ... London: George, George, and John Robinson, 1796.
Hays, Mary. Appeal to the men of Great Britain in behalf of women. London: Joseph Bell, Joseph Johnson, 1798.
Hays, Mary. Appeal to the men of Great Britain in behalf of women. London: Joseph Bell, Joseph Johnson, 1798.
Hays, Mary. Historical Dialogues for Young Persons. London: Joseph Johnson, Joseph Mawman [Poultry], 1806.