He was just 23 years old when, in 1957, he won the MVP award. I was in third grade, and hard as it might be to believe, I don't think I thought of him as Black. He'd come up from the Negro league in fact, the very last player to arrive in the Bigs, at a time when African-Americans were just beginning to get a place in major league baseball dugouts.
Seems to me that Billy Bruton played next to him in centerfield, so he wasn't the only African-American on the roster. But he was early. Those old pics of that 1957 team--World Champ Milwaukee Braves!--have four or five others.