France and Sweden sign the Treaty of Ulm. By the terms of this
agreement, the Elector of Bavaria and his brother, the Elector of
Cologne, promise to remain neutral until the end of the Thirty
Years War.
Citation:
Editors. "Treaty of Ulm with France and Sweden".
The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16276, accessed 19 June 2013.]