Lancaster Mennonite Historical Society is now Mennonite Life.      Your prime source for Pennsylvania Mennonite & Amish history, genealogy, theology, and culture. Mission: To educate and inspire Mennonite families and congregations and the broader community through promotion of the history, beliefs, and lifestyle of the Anabaptist-Mennonite tradition Lancaster Mennonite Historical Society, founded in 1958, is a nonprofit, educational organization associated with the Lancaster and Atlantic Coast Conferences of the Mennonite Church. Open to the public, it is fully accessible to physically challenged persons.