On this day: December 4

POSTED: 05:14 PM MST Dec 03, 2012    UPDATED: 12:00 AM MST Dec 04, 2012 
Pan Am airliner

The U.S. Senate approves America's participation in the United Nations, the "Million Dollar Quartet" jams at Sun Studios, Led Zeppelin disbands, and Pan Am collapses, all on this day.