DAILY NATIONAL INTELLIGENCER, Washington, D.C., Feb. 11, 1853  Page 3 has an article: "From The Coast of Africa - The Extinguishment of the Slave Trade" which notes in part: "...arrived in England from the coast of Africa. She reports that the slave trade is in effect extinguished...All the chiefs promised to give up the slave trade & were giving encouragement to the missionaries...".
Then another article: "The Slave Trade" notes: "...dated Rio de Janeiro...says that...one thousand slaves were landed a few miles south of Rio & marched into the interior, the 'cargo' having sold for 800 milreis each. The slaver escaped...".
Four pages, nice condition.