Helen Marie Green was about 12 years old when she vanished from Chicago’s Southside in the winter of 1971. She was last seen on or around January 1 while riding a bicycle with distinctive Tony the Tiger grips. Reports say Helen and her brother Johnny ran away from an abusive home; the siblings became separated the night they fled. Johnny was later found and taken to a youth camp, but Helen was never seen or heard from again.

Foul play is suspected, though no concrete evidence has been reported and the details of their separation that night remain unclear. The case has remained open and unresolved for more than five decades, and Helen’s brother has continued to seek information about her fate.

If anyone remembers Helen, the bicycle with Tony the Tiger grips, or the Southside neighborhood around New Year 1971, please come forward with what you know.