To T. A. Marshall of Charleston Lincoln writes: "I wish you, G. W. Rives of Edgar, and O. L. Davis of Vermilion, to co-operate in getting a Senatorial candidate on the track, in your District. Davis is here, and agrees to do his part. The adversary has his eye upon that district, and will beat us, unless we also are wide awake. . . . I am most anxious to know that you will not neglect the matter." Abraham Lincoln to Thomas A. Marshall, 23 April 1858, CW, 2:443.