PHILADELPHIA — Harry Olivieri, co-inventor of the Philly cheesesteak and co-founder of the Pat's King of Steaks cheesesteak emporium, has died. He was 90.

He died of heart failure Thursday.

Harry and his older brother, Pat Olivieri, were running a corner hot dog in 1933 when they made the first version of the sandwich that put the city on the street food map.

Tired of hot dogs, Pat suggested that Harry go to a store and buy some beef.

The brothers piled the meat on rolls and were about to dig in when a cab driver arrived for lunch, smelled the meat and onions and demanded one of the sandwiches.