Frederick William, Great Elector of Brandenburg, drives out the
Swedes from Pomerania and Prussia.
Citation:
Editors. "Great Elector drives out the Swedes from Pomerania and Prussia".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16456, accessed 24 May 2013.]