This Creative Director Finds Satisfaction in His Rock ‘n’ Roll Collection

Beatlemania was in the air in 1964, but it wasn't until Gary Greenberg saw his school auditorium decked out in Beatles decor for a dance that he realized the phenomenon was bigger than music. "I remember looking around thinking, 'Something is happening that's important,'" recalled Greenberg, chief creative officer at Philadelphia's Brownstein Group agency. "[They]...