For Sunday Miscellany, Helen O'Rahilly on how a childhood friend's destiny became entwined with the Ground Zero site - listen to The Mayor of the World Trade Centre above...

My friend Joe always wanted to be a photographer. His brother got him a 35mm camera for his 15th birthday, and Joe would buy his rolls of film in my dad's chemist shop in Finglas...

Listen to more from Sunday Miscellany here.