The Historical Society of the Episcopal Church (HSEC), formerly the Church Historical Society, was founded in Philadelphia in 1910. This voluntary society includes scholars, writers, teachers, ministers as well as others interested in its goals and objectives. It publishes the quarterly academic journal Anglican & Episcopal History and co-publishes a newsletter, The Historiographer with the National Episcopal Historians and Archivists (NEHA).
More information on the Wikipedia page 
The website is .