Editors. "William O'Brien and John Dillon call on Irish tenants to organise themselves". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18951, accessed 17 April 2014.]
Irish nationalists William O'Brien and John Dillon draw up a so-called 'Plan of Campaign', which organises a system for supporting tenant farmers to secure rent reductions.