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Photographer Don Sparks’ work reflects a long career from the mid 50s through the 70s as a photographer of some of the biggest names in the NBA, MLB, NFL, and more. These rarely seen images include some of the great names in sport as well as the arts. How did he capture such great images? And what is his greater legacy? Larry Potash has the backstory.

Backstory airs Saturday nights at 10:30 on WGN. Catch up on previous seasons of Backstory with the podcast at via Stitcher, iTunes, Google Play, or wherever you get your podcasts.