 During that time he produced his gigantic work, "The Records of the English Province of the Society of Jesus" (eight octavo volumes), a compilation of immense labour and original research and an invaluable store of historical detail put together with a persevering assiduity rarely found even in the most painstaking of historians.Brother Foley deserves to share with Father Henry More the title of historian of the Society.He also wrote "Jesuits in Conflict", a work describing the sufferings of some of the English Jesuit confessors of the Faith.