There are 5 titles associated with this person.

Mackenzie, Mary J. Geraldine; or, Modes of Faith and Practice. A Tale, in three volumes. By a lady. London: William Blackwood [Princes Street], Thomas Cadell and William Davies, 1820.
Mackenzie, Mary J. Geraldine; or, Modes of Faith and Practice. A Tale, in three volumes. By a lady. Second Edition. London: William Blackwood [Princes Street], Thomas Cadell and William Davies, 1821.
Mackenzie, Mary J. Private Life; or, Varieties of Character and Opinion. In two volumes. By the author of “Geraldine,” &c. &c. London: William Blackwood [Princes Street], Thomas Cadell Jun., 1829.
Mackenzie, Mary J. Private Life; or, Varieties of Character and Opinion. In two volumes. By the author of "Geraldine," &c. &c. Second Edition. London: William Blackwood [Princes Street], Thomas Cadell Jun., 1830.