Editors. "Anglo-Russian Convention of St. Petersburg". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17683, accessed 21 May 2013.]
Britain and Russia sign the Convention of St. Petersburg, whereby Russia agrees to supply troops in return for annual subsidies. This document is ratified in Febuary of the following year.