If you've never seen this page before, it's fantastic. It has been updated with more pictures recently.
What amazes me was how much of that food has still been found edible and capable of sustaining life, fifty years after it was packed in some cases. That's very reassuring. The secret apparently is to keep it cool, dry and in the dark. We also have something they didn't in those days - mylar bags and oxygen absorbers, which can turn any regular shlob into a food storage wizard.