Editors. "Ulm, Nuremberg and Augsburg form a league for religious freedom". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14505, accessed 23 May 2013.]
The German cities of Ulm, Nuremberg and Augsburg form a league for the defence of freedom of conscience, effectively defending the new faith of Protestantism.