One of the most recognizable logo brands of the 20th century, one that's still around (with modernized variations) here in the 21st, celebrates its 60th anniversary Thursday. It's the CBS eye, which, only in the most literal sense, is a black eye on the face of the CBS network. Otherwise, it's a marketing triumph that would make Don Draper weep with pride. The CBS Eye, with the CBS Television Network identified in the pupil, and with the eye floating behind a sky of black-and-white clouds, was broadcast for the first time on Oct. 20, 1951...