I also have a PDF version of "The Genealogy of the Descendants of George Washington Sevey." I saved it when I found it at the online family history archive through Brigham Young University. (Note: I have not been able to access the online version through BYU for a couple months now, though.) Let me know if you want me to send you my saved PDF copy.
My great-grandma was Pearl Sevey, a daughter of George Washington Sevey and Pheobe Melinda Butler.