Editors. "Peace of Milan returns the Valtelline to the Grisons". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16152, accessed 24 May 2013.]
The Peace of Milan restored the Valtelline to the control of the Grisons. The terms of the agreement allow passage through the territory for Spanish troops.