Rare Glimpses of Lost Underworld

For colleagues and friends of Mr. Golestan, the exhibition is a fitting way to keep his spirit — and his art — alive. “He was driven by a social conscience and he always found a way to express it in his photography,” said Reza Deghati, the French photojournalist and philanthropist who worked side-by-side with Mr. Golestan during the revolution. “His work is a real eye-opener.”