MLB says percentage of black players highest since 2012
Baseball Demographics, 1947-2016 – Society for American Baseball Research
Diversity study finds percentage of Black MLB players at another record low
Meet the Savannah Bananas, who wow fans and have MLB's attention - Los Angeles Times
Baseball's racial disparity continues, from Little League to the majors
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MLB Salaries Are Yet Another Way to Visualize Growing Economic Inequality
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2018/W6: Baseball Demographics (1947-2016), discussion
Great Migration (African American) - Wikipedia