There is supposedly a reference to the college dorm that my father lived in, traced in the dust on the surface of the moon.
There was a rivalry between the various houses of the California Institute of Technology, including Dabney House and Fleming House (where my father lived). "DEI", standing for "Dabney Eats It", appears in graffiti apparently (the letters DEI appear in various places in the move Real Genius, set in a fictionalized version of CalTech). The Dabney response, "FEIF" (Fleming Eats It Faster), was left behind by former Dabney resident Harrison "Jack" Schmidt, one of the last two men to walk on the moon.
I cannot vouch for the accuracy of this story.