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View of six women sitting and lying on lounges on the sun roof of the Women's Athletic Club, located at 626 North Michigan Avenue in the Loop community area of Chicago, Illinois, 1929. From the Chicago Daily News collection. (Photo by Chicago History Museum/Getty Images)

View of six women sitting and lying on lounges on the sun roof of the Women's Athletic Club, located at 626 North Michigan Avenue in the Loop community area of Chicago, Illinois, 1929. From the Chicago Daily News collection. (Photo by Chicago History Museum/Getty Images)