You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: TELEVISION & HISTORY 
Clue: When "60 Minutes" premiered, this man was U.S. president
lyndon b. johnson

Category: NAME'S THE SAME 
Clue: Name shared by a British film company & an American who made millions in oil & pharmaceuticals
hammer

Category: FAMOUS AMERICANS 
Clue: This man was nearby at the assassination of 3 U.S. presidents, one of whom was his father

robert todd lincoln