books.google.com - On a May Sunday in 1927, progress and tradition collided at the Groffdale Old Order Mennonite Church in eastern Pennsylvania when half the congregation shunned the cup of wine offered by Bishop Moses Horning. The boycott of this holiest of Mennonite customs was in direct response to Horning's decision...http://books.google.com/books/about/Horse_and_buggy_Mennonites.html?id=OmhWNx5omLIC&utm_source=gb-gplus-shareHorse-and-buggy Mennonites
