What is an Orphan film? Narrowly defined, it’s a motion picture abandoned by its owner or caretaker. More generally, the term refers to all manner of films outside of the commercial mainstream: public domain materials, home movies, outtakes, unreleased films, industrial and educational movies, independent documentaries, ethnographic films, newsreels, censored material, underground works, experimental pieces, silent-era productions, stock footage, found footage, medical films, kinescopes, small- and unusual-gauge films, amateur productions, surveillance footage, test reels, government films, advertisements, sponsored films, student works, and sundry other ephemeral pieces of celluloid (or paper or glass or tape or . . . ). You can see some great examples of orphan films at the National Preservation Foundation.