The 1814 memoir of missionary wife Harriet Newell was important for awakening the early nineteenth-century American Evangelical imagination on behalf of the burgeoning missionary cause. As young women ‘read the self’ and patterned their lives according to the literary examples they encountered, Newell's memoir used the language of ‘usefulness’ as a powerful theological plot. This article hopes to address the lacuna of scholarship regarding the theological aspects of Newell's writing and how it was those aspects in particular which subsequent generations venerated in the creation of missionary wife memoirs.