It looks like everybody's reviews hit the same four stars. I don't think Piper ever got the recognition he deserved while he was alive; of course is that's why so much of his work is in the public domain now. Which is kind of sad, but good for us! I remember reading this book in particular when I was about 12, and then was never able to find it again: I could remember everything about it except the title! Thanks to Manybooks for making so much forgotten sci-fi available to a new generation!
After reading all the rants from various fanatics trashing this book, I considered it a moral duty to at least download it. If they disliked it so much, it must have something going for it! Since it wasn't even 20 pages, though, I read it as well. This certainly could not be called a scholarly treatise (in such a length, how could it be?) It doesn't depart from the known facts as far as I could determine, and as far as its conclusions are concerned, my only objection is the apparent opinion on the author's part that other "prophets" were any better. Call him by whatever name you will, Yahweh the Wind God is the most evil creation of the human mind, and those who have contributed to saddling our civilization with such delusions have a lot to answer for, including, but not limited to, Mohammed!