Hiroko Tsutsumi remembers being drawn to a photo in a leaflet for a war-related exhibition at a museum she visited last fall.

"I wondered if my father looked like this man," said Tsutsumi, 73, a survivor of the Aug. 9, 1945, atomic bombing of Nagasaki. The photo depicted a soldier lovingly holding his baby before going off to war.

Soon after Tsutsumi was born in 1942, her father was sent to China as a civilian worker for the Japanese military. He never returned.