December 30, 1839
To the Senate and House of Representatives:
I transmit to Congress copies of a communication from Governor Lucas, and of additional documents, in relation to the disputed boundary line between the Territory of Iowa and the State of Missouri.
M. VAN BUREN.
Martin van Buren, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/200576