John Wayne in a 10-gallon hat

A lot of people claim to be wearing a 10-gallon hat when they're really wearing more of a 10-liter hat. (That's just 2.64 gallons at typical exchange rates.) But this one really is a classic 10-gallon hat, atop a 10-gallon head. This photo of actor John Wayne is undated, but we believe it's from the early 1960s.