Lee Harvey Oswald [Misc.]Was the Warren Commission's conclusion—that President John F. Kennedy was slain by a single shot by a single assassin who was Lee Harvey Oswald—the correct one?  Richard M. Mosk, now a justice of the California Court of Appeal and then a junior investigator for the Commission, says yes.  M. Wesley Swearingen, now a Temecula retiree and then an FBI agent with sources knowledgeable about both Fidel Castro's Cuba and the Mob, says no.  He says he was kept from joining the assassination inquiry by his boss, Mark Felt, who would before his death identify himself as Woodward and Bernstein's Deep Throat.