Retro-geeks and artists alike were abuzz last month with the news that the Andy Warhol Museum had recovered digital works of art created by Warhol himself some thirty years ago on a Commodore Amiga computer. A new documentary produced by the Carnegie Museum of Art traces the process of digital archeology that revealed these works to the public.

The project was a collaboration between archivists at the Warhol Museum, artist Cory Arcangel, and experts of obsolete computer tech. It's all pretty fascinating, and raises a lot of questions about what future preservation, archiving, and restoration of digital cultural artifacts might look like.

Read more about the documentary and others in the Invisible Photograph series here.