I've told various people over the last few years about the pictures of the import documentation that I saw for the first Apollo moon rocks. Here is one such picture. It's not as high-res as the ones I saw before, but it's probably good enough.

These documents show how the moon rocks from the first Apollo mission to land on the moon had to go through customs in Hawaii before they were allowed into the United States. Gotta love beurocracy! :)