By Donald Freed and Mark Lane. "*Assassination of a Head of State." Mark Lane isn't a name you associate with regular channels. He is, however, a name gadfly around the JFK case, and this book is, I think, a "non-fiction novel" making the case that the CIA trained Lee Harvey Oswald. Did become a 1973 film starring Burt Lancaster.
Contents aside, this vintage PB is in okay, not great, shape for its age -- visible creasing to the covers, the top front is starting to flake and was repaired with tape inside; toned pages. But sits straight, with the pages more or less snug; you just need to handle the covers a bit gently.