One day in 1954, Jack Yufe, a store owner from Southern California, stepped off a train in Essen, West Germany, and began searching the crowd at the station. He was looking for someone he had not seen since he was a baby, 21 years earlier.
A man approached. A strangely familiar man. “What a nerve, someone is wearing my face,” Mr. Yufe (pronounced YOO-fee) recalled thinking in an interview with Nancy L. Segal for her 2005 book, “Indivisible by Two: Lives of Extraordinary Twins.”