Emily Fisher Landau, a New Yorker who used a Lloyd’s insurance settlement from a spectacular jewel heist in her apartment to fund what would become one of America’s premier collections of contemporary art, died on March 27 in Palm Beach, Fla. She was 102. Her death was confirmed by her daughter, Candia Fisher. Her husband Martin Fisher, a real estate developer, died in 1976. She had three children with him, Richard, Anthony and Candia. In 1978, after Mr. Fisher’s death, she married Sheldon Landau, a retired clothing manufacturer. Mr. Landau died in 2009. Her son Anthony and his wife, Anne, died in a plane crash in 2003. That same year, her grandson Andrew died in an automobile accident. Richard, her older son, died in 2006. Emily Lanzner was born on Aug. 23, 1920, in Glens Falls, N.Y., near Lake George, and grew up in the Washington Heights section of Manhattan, living in Emily Court, a building her father, Samuel Lanzner, developed and owned, naming it after his daughter. Her mother, Cecilia Lanzner, was a homemaker. From 1991 to 2017, Ms. Landau opened her collection of 1,200 artworks to the public in the Fisher Landau Center for Art, a repurposed former factory in Long Island City, Queens. In 2010, she pledged almost 400 works, then worth between $50 million and $75 million, to the Whitney Museum of American Art, where she had long been a trustee.