Hampshire College, a small, liberal arts school in western Massachusetts, is one of America’s leading producers of photographers and documentarians, to the extent that the collection of award-winning camera operators who make up the school’s alumni base have come to be known as the ‘Hampshire mafia.’ The school’s reputation has come about largely due to the efforts of one man, Jerome Liebling, who taught at Hampshire for a quarter-century. This weekend, Liebling earns an honor usually reserved for high-rolling donors: the school’s film and photography building is being renamed for him.