Some children left the ghetto hidden in sacks or toolboxes. Some rode out in carts, in ambulances, even in coffins.
Others were led out through a church, or through an old courthouse that stood on the ghetto's edge.
Once outside, each child got forged papers and a new Christian name. Social workers from Irena's own department helped forge the documents.
It worked. Child by child, about 2,500 of them made it out.