Burlington (IA) Hawk-Eye, "Slave Stampede," August 6, 1856

   SLAVE STAMPEDE.––A reward of $1,500 was offered yesterday for the apprehension of eight negroes––a man and wife, three sons, two daughters and the wife's sister, who disappeared on Monday night. They are the property of Messrs. R. Wash and John O'Fallon, Jun. Several other slaves are supposed to be in their company on the underground track.