The Imprensa Evangelica, published between 1864 and 1892 in Brazil by Presbyterian missionaries, furnished Brazilian Evangelical minorities with a means of crafting new religious identities and of asserting their presence in the public arena. Its editors defended the political rights of non-Catholics in the country, took part in religious controversies with Catholic publications in Brazil and Portugal, and intervened in on-going public debates on the separation of Church and State and the abolition of slavery. This article also examines how the periodical's circulation generated new reading practices in Brazil.