The collaborative website Lost-films.eu has a database of more than 4,000 missing movies, “from an actual jazz-era version of The Great Gatsby (1926) to a re-enactment of The Battle of Gettysburg (1913) staged while the veterans were still alive. But even more curious is the site’s ‘Identify’ section – an open call to other museums and the public to I.D. films that sometimes survive without title cards, without canister labels, without so much as a cast or director or country of origin.”