Editors. "President A. Johnson is acquitted by Senate". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18548, accessed 19 May 2013.]
USA President Andrew Johnson, who has been impeached by the American Senate for violating the 'Tenure of Office' Act, is acquitted, after the accusers narrowly failed to achieve the two-thirds majority in the final vote.