This undated file photo shows football player Harold "Red" Grange. From the crude, oblong leather helmets to the sparsely padded brown and blue vertical-striped uniforms of the Chicago Bears, it's easy to see how equipment has drastically evolved in the NFL since the days of The Galloping Ghost in the 1920s and '30s. From their heads to their toes, the players' looks through the decades have changed so much, it's tough to believe it's all the same sport. (AP Photo)
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