NEW YORK — Several college students browsed a satirical Yiddish magazine written for tenement-dwellers working in sweatshops in the early 20th century. Their classmates looked through historical matchbooks advertising kosher restaurants, while two Jewish students searched for photos of their ancestors in an interactive display that linked images of pre-Holocaust Jewish life to cities in Eastern Europe. A guide for Manhattan’s YIVO Institute for Jewish Research told the visiting students from the City University of New York’s Hunter College about the varieties of Yiddish theater. Some of the performances were “dramatically important and avant-garde,” he said, while others were “these...