Cassius M. Clay made a speech at Covington, Ky., on Wednesday evening of last week, in which he denounced slavery with his accustomed force and bitterness, and predicted the triumph of the Republican party. Near the close of his remarks he was interrupted by someone calling out, ‘Let him down’, ‘tar and feather him,’ etc. The speaker informed these parties, in reply, that he was used to that kind of thing, and he ‘would like to see it done.’ It was not done.
(Liberator, Dec 2, 1859, pg 3)