The Family Goes to the Moon
Charlie Duke left a photo of his family on the moon and took a picture to prove it. There are a lot of people who think that the moon landing was faked, and officials probably thought that this photo didn't help the conspiracy theories. It kind of looks fake, and the story itself can be faked, so why put it out there? It was declassified after a few decades. We can only assume that it's still on the moon...