I recommend a great book that I'm reading right now by Jack Cavanaugh, "Boxing's Brainiest Champ and His Upset of the Great Jack Dempsey," that more or less confirms what the article I cited above asserts. I highly recommend the book if you have interest in Gene Tunney, Jack Dempsey and that era in boxing. Among others, there are chapters on Battling Levinsky and Luis Firpo. Good quality of writing too.
By the way, what is your favorite biography on Jack Dempsey? I'm leaning toward buying the lone biography on Joe Gans, or perhaps one on Sam Langford next, but one on Dempsey won't be far behind on my reading list.
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