You Are Not I by Sara Driver (1981)
Co-written by Jim Jarmusch, this film's negative was lost in a warehouse fire. It is based on a Paul Bowles story and a print was found among his belongings in his estate. A digitally remastered version was shown for the first time in 20 years in 2010. A 16mm print was donated to MassArt.
Borderline by Kenneth Macpherson (1930)
A silent film using avant-guard techniques and dealing with inter racial relationships. It features Paul Robeson. It was considered lost until a 16mm print was discovered in Switzerland in 1983.
