By Robert J. Groden and Harrison Edward Livingstone. "...I presume." Groden co-authored JFK: The Case for Conspiracy; this one insists the fatal shot came from the grassy knoll, that autopsy photos were forged, etc. -- although much of the photographic proof the back cover touts isn't probative to my eye.
The paperback isn't in super shape: there's a spine crack and a couple of spine nicks; edgewear; page toning; a fold to the back cover; some dented pages; and a previous owner's name on the flyleaf. But there's also a previous owner's notes stashed in the front, so if you're looking for a research copy that includes some research, this budget PB is your guy.