The Planetary Society reports that it will contribute a library of information to NASA for the 2007 launch to Mars.
"Visions of Mars is a message from our world to future human inhabitants of Mars. It will launch on its way to the Red Planet in the summer of 2007 aboard the spacecraft Phoenix. Along with personal messages from leading space visionaries of our time, Visions of Mars includes a priceless collection of Mars literature and art, and a list of hundreds of thousands of names of space enthusiasts from around the world. The entire collection will be encoded on a mini-DVD provided by The Planetary Society, which will be affixed to the spacecraft."
There is a message to future explorers from the late Carl Sagan, books by science fiction writers H.G. Wells, Arthur C. Clarke, Isaac Asimov, Ray Bradbury and other Mars and space exploration enthusiasts.
Someone, some-being, someday might find the disc containing Earthling ideas about the planet Mars and our future with it or on it. Maybe it will be the core collection for the Planet Mars Public Library...?