Editors. "John Casimir of the Palatinate signs an alliance with Henry of Navarre". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15349, accessed 21 April 2014.]
John Casimir of the Palatinate and Henry of Navarre sign a treaty of alliance, as fellow Protestants hostile to the militant Catholic rule of France under Henry III and the Catholic League.