FILE - In this Sept. 10, 2009, file photo, Walter Liedtke, left, a curator in the Metropolitan Museum of Art’s Department of European Paintings, discusses the world famous painting "The Milkmaid" by Dutch artist Johannes Vermeer with Princess Maxima and Prince Willem-Alexander of the Netherlands at the Metropolitan Museum in New York. Liedtke was one of the people killed Tuesday, Feb. 3, 2015, in a collision between a SUV and commuter train accident in Valhalla, N.Y. (AP Photo/Craig Ruttle, File)