S04E02: Beauty entrepreneur and philanthropist Madam C. J. Walker and Boston bicycling trailblazer Kittie Knox.

Fan of a multi-step beauty routine? (Same.) So, as it happens, was Madam C. J. Walker, who built a national beauty empire while providing a path for other Black women to build businesses of their own. Meanwhile, over in Boston, Kittie Knox was riding and racing her bicycle, charming reporters, and challenging the idea that the sport was solely the domain of white men.