On this day: July 7

POSTED: 12:26 PM CDT Jul 09, 2013    UPDATED: 01:00 AM CDT Jul 07, 2013 
Oliver North swearing in at Iran-Contra hearing

Sliced bread goes on sale for the first time, Elvis Presley makes his radio debut, Led Zeppelin plays their last concert, Oliver North testifies at the Iran-Contra hearings, and Michael Jackson is remembered by family and friends, all on this day.