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Sickels was a smart guy, who's brain was filled with so many facts and opinions that I think he just kind of vomitted his whole brain into a book. Not all the things he says are coherent, but quite a bit of what he says is pretty interesting. He's like a whackier version of Buckminster Fuller, I guess.
I don't know why, but I have a feeling this guy's voice sounded similar to Julius Sumner Miller's (no reason in particular...just a hunch):
Sickel's full book "The Universal Panacea" is available at the Hathi-Trust Digital Library, and I highly recommend it: http://babel.hathitrust.org/cgi/pt?id=uc1.b273994