Editors. "France signs a further treaty of alliance with Sweden". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16089, accessed 17 April 2014.]
Swedish Regent Axel Oxenstjerna visits French King Louis XIII, a meeting used to negotiate and sign a treaty of alliance between France and Sweden.