1) The JFK Myths: A Scientific Investigation of the Kennedy Assassination, by Larry Sturdivan
2) With Malice: Lee Harvey Oswald and the Murder of Officer J.D. Tippit, by Dale Myers
3) Case Closed, by Gerald Posner
4) The Death of a President: November 20-November 25, 1963, by William Manchester
5) Reclaiming History: The Assassination Of President John F Kennedy,by Vincent Bugliosi **
**I haven't actually read Bugliosi's book from beginning to end because it's too damn long.
Great list. Yes, Bugliosi's book is the ultimate authority on the assassination, these other books are worth reading too.
I think Gerald Posner is also an authority on the Nazis, I saw him on some documentary the other day, "Nazis, the ultimate evil", pretty good.