Fold-Ins, Past and Present - The New York Times

If you're a child of the 70s or early 80s, perhaps you had a collection of Mad magazines?  Most likely the backs of those magazines had a couple of creases?

This is quite possibly one of the the best uses of the internet I have seen in at least a year.  Fold-ins from Mad, 1960s to present, done in Flash.

Fold-Ins, Past and Present - The New York Times