In honor of the release of the Man of Steel tonight, I have found an excellent infographic detailing the many "S" symbols of Superman's costume.
Here’s another infographic I did for HalloweenCostumes.com, this time illustrating the history of the emblem on Superman’s chest.
Until I researched this, I had no idea just how many variations the shield went through in its first five years, before they settled on the classic design that went mostly unchanged for over five decades.
My previous infographic (illustrating the evolution of Iron Man’s armor) can be seen here.
(click to enlarge)