This article describes the involvement of Roman Catholics in the Religious Education Association during the first 50 years of its existence. It examines attitudes of Protestants toward Catholics expressed in journal articles, convention speeches, and archival material. It presents the contributions of Roman Catholics at conventions and in journal articles during this period. The article contends that Roman Catholics deepened involvement in the REA went a long way to making the association a multifaith organization. The history also documents changes in Roman Catholic viewpoints and emphases over the period of these 50 years from an exclusive concern with schooling to a broader view of the educational mission of the church and from education in an authoritarian and dogmatic spirit to one slightly more open to outside influences and cautiously willing to cooperate with other religious groups.