Full length posed portrait of Josh Gibson, of the Homestead Grays. Elected to the Hall of Fame in 1972. (Photo by Ernest Withers/NBHFM/MLB Photos)

UNDATED: Buck Leonard of the Homestead Grays poses for a portrait. (Photo by National Baseball Hall of Fame Library/MLB via Getty Images)

Oscar Charleston, Josh Gibson, Ted Paige, and Judy Johnson posing for a group photo during a Negro League baseball game, San Francisco, CA, 1940. (Photo by Clarence Gatson/Gado/Getty Images)

ST. LOUIS, MO - CIRCA 1924: James Thomas "Cool Papa" Bell of the St. Louis Stars of the Negro Baseball League. (Photo by Sporting News via Getty Images)

Taken during a Negro League game between the home team Homestead Grays versus the New York Black Yankees at Griffith Stadium, Washington DC, 1940. Running to first is Hall of Famer Buck Leonard; the first baseman is James Stark. (Photo by Transcendental Graphics/Getty Images)