Photographing the last of the Holocaust survivors

NEW YORK - Rabbi Aliza Erber, 80, stood at the edge of a pier in lower Manhattan and told those around her to draw closer - and to look out toward the Brooklyn Bridge.

A few seconds later, there it was: a portrait of her face projected onto the bridge, against the backdrop of the Brooklyn skyline, along with her own words. "It was not okay then, it's not okay now."

She took in the moment, mesmerized. "That's me," she said, her eyes shining. "That's me."

Erber is a Holocaust survivor who was hidden in a forest in the Netherlands as a baby during World War II.

Standing alongside her Saturday evening was Gillian Laub, a multimedia artist, who had orchestrated a sweeping public art project that unfurled across Manhattan and Brooklyn.

Using projectors positioned at strategic spots, Laub, who is best known for her photography, arranged for her portraits...