JeffriesJohnson Worlds Championship Boxing Contest Held at Reno Nevada July 4 1910. Word Search Puzzle Solver. JeffriesJohnson Worlds Championship Boxing Contest Held at Reno Nevada July 4 1910 word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. Film recording of a controversial boxing match with the first black heavyweight champion fighting a white retired former champion. This includes identifying and searching for words that are related to : Documentary, Jack Johnson, James J Jeffries .