Who knew the Ed Sullivan Theater was something right out of a Willy Wonka factory? Stephen Colbert learned this before he even started his tenure as The Late Show’s newest host, when he swung by David Letterman’s office to get some insider advice about the gig. But dealing with the ...

Highlights of this day in history: The Civil War's Second Battle of Bull Run ends; Thurgood Marshall confirmed as first black Supreme Court justice; First black astronaut blasts off; Ty Cobb's baseball debut; David Letterman moves to CBS. (Aug. 30)