Diane Arbus was an American photographer best known for her intimate black-and-white portraits. Arbus often photographed people on the fringes of society, including the mentally ill, transgender people, and circus performers. Interested in probing questions of identity, Arbus’s Identical Twins, Roselle, New Jersey (1967), simultaneously captured the underlying differences and physical resemblance of twin sisters. “A photograph is a secret about a secret. The more it tells you the less you know,” she once mused. Born Diane Nemerov on March 24, 1923 in New York, NY, she was raised in a wealthy family, which enabled her to pursue artistic interests from an early age. She first saw the photographs of Mathew...