Jackson Browne original photographers 35mm film slide 1970's holding guitar case. You are bidding on an original 35mm film slide from the historic archive of Silver Screen Mementos. This 35mm slide was produced by the film/TV studios for publicity purposes. Slides were often sent to newspapers, magazines and TV stations to be used for publication to create a publicity campaign around a TV show or movie. The items are no longer produced as the digital form has taken over. A rare piece of cinema or televison history.