“Jack Johnson was the meanest of the lot”

Found this quote by Wills online but I’m not sure when it’s dated:

“Jack Johnson was the meanest of the lot. Jack was a smart fellow in many ways, but in others he showed no sense at all. He got so stuck on himself he had the idea everyone should fall down and worship him. Johnson always wanted to show off. He wanted to attract attention all the time, and he didn't care much how he did it. As long as he made people talk about him he was happy, and he never stopped to think that he was doing himself more harm than good.

"If you were a young fellow trying to get along, Johnson would not show you anything. He would rather show you up instead. Take the way he treated me when we were training to fight Jim Flynn in Las Vegas. I was a young fellow then who didn't know much, but anxious to get somewhere.

"Jack Curley, who was promoting the match and looking after Johnson, offered me a job as sparring partner. I was glad to take it because I needed the money and thought I might learn something from the champion. There was a big crowd looking on the day we put on the gloves. From the start, Johnson tried to make me look silly so he could laugh at me in front of the crowd. Remember, at this time, although I was broke, I had something of a reputation, earned through hard fighting , and a boxer's reputation is his only asset.

"Anyone but Johnson woudl have thought of that and acted accordingly. All Johnson
coudl think of was his desire to make me look foolish.

"Of course I expected to be hit and hit hard. I would not have minded that, for I was strong and tough, and it is all in the game. But when Johnson stopped straight boxing and tried to make me look bad, I got kind of sore. Johnson was very proud of his strength. He thought there was no one in the ring his equal in that respect or in any other, for that matter. One of his favorite tricks was to grab your arms, waltz you around and laugh, and then suddenly let you go and uppercut you.

"Well, after he tried that on me a few times, laughing and kidding with the crowd at my expense, I decided I'd see which was the stronger of the two. The next time he grabbed my arms to shove them back, I set myself and threw him across the ring. That wiped the grin off his face in a hurry, for the crowd began to laugh at him instead of with him, something that makes a big difference to these babies who like to show off. Having lost his goat, Johnson began to slug. That was playing right into my hands, for I was tougher and a harder hitter. After mixxing it for a few moments he began to get the worst of it so he clinched and held on, meanwhile trying to laugh it off.

"That was the only time I boxed with Johnson. He told Curley to pay me off and let me go. He didn't want anyone in his camp he could not handle as he pleased. That incident is typical of Johnson's whole career. He never cared how he hurt other peoples' feelings as long as he could make himself look big. Showing off was the cause of all his troubles. At the same time I would like to say right here that if Johnson did not act right when he won the title he was made to pay dearly. Although he could have avoided the trouble that came his way, he was not treated fairly either. I think that all intelligent persons will agree with me that neither Johnson nor the people that undertook to run him out of boxing have any reason to be proud of the way they acted."

-Harry Wills