Socialist Philipp Scheidemann served as the first chancellor of the Weimar Republic but resigned in June 1919 over his refusal to sign the Versailles Treaty.
Editors. "Philipp Scheidemann forms cabinet in Germany". The Literary Encyclopedia. First published 01 March 2010; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=12664, accessed 19 April 2015.]