Louis won 25 consecutive defenses of his heavyweight title, a record for all weight classes. He also was champion longer than any other boxer in history -- from 1937 through 1949.

Jack Johnson's historic boxing win on July 4,1910, upset much of America. But the next Black world heavyweight champ remains an American icon.

The contract, which is being auctioned by Lelands, is from Detroit legend Joe Louis’ final professional fight against Rocky Marciano at Madison Square Garden in New York City on October 26, 1951.