Cleveland.com has an article that lists the 59 Ohio State Buckeyes drafted in the first round, since the 1971 NFL-AFL merger. There is a picture of each of the 59, which is pretty cool.
Fifty-nine Ohio State players have been chosen in the first round of the NFL Draft since the NFL-AFL merger in 1970 - ranking the Buckeyes second among colleges behind only USC with 61 first-rounders.
Reflecting on the NFL success of each pick, it confirms the "roll-the-dice" nature of the draft; you've got Hall-of-Famers, All-Pros, solid contributors, journeymen, and flat-out busts.