• Catholic Record Society Describes publications, conferences, and research grants of a group that promotes the historical study of Catholicism in Britain. Includes an index of the society's extensive record holdings. http://www.catholic-history.org.uk/crs/
• The Postgate Society The Postgate Society is the the Diocese of Middlesbrough's official association to provide knowledge of Catholic History and to foster devotion to the martyrs and those who preserved the faith in penal times. http://www.catholic-history.org.uk/postgate.htm