The history of film preservation, like every attempt to save the past for the future, comprises a long string of tragic losses and miraculous recoveries. We know the stories: Studios destroying their silent films wholesale to recover the silver in nitrate prints; Dreyer’s The Passion of Joan Of Arc, presumed lost, moldering in the closet of a Norwegian mental institute; the fires at Fox’s warehouse in 1937 and the MGM vault 30 years later; James Mason discovering Buster Keaton’s archive in a shed at the back of his new house. There have been brief victories measured against slow, grinding defeats, just as in any field ruled by time and entropy.