The Blasphemy of Jan of Leiden is the oldest text by Menno Simons, and it indicates that he was an early opponent of the Anabaptists of Münster. This, at least, has long been the consensus view about early Mennonite history. A challenge for researchers, however, is that the oldest copy of The Blasphemy is from 1627. This post introduces a project to find out more about this 1627 text.
(Click the images for more details.)