Editors. "J. C. Calhoun's treaty for annexation of Texas by US". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18082, accessed 25 May 2013.]
A treaty of annexation between the USA and Texas is written by John Caldwell Calhoun, but it is defeated in the Senate on 8th June.