John Lambert MP presents Parliament with the Derby Petition, which
calls for a permanent settlement of the constitutional crisis
between the army and Parliament.
Citation:
Editors. "Derby Petition for a permanent settlement of the constitutional crisis".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16449, accessed 26 May 2013.]