In his book November 22, 1963: You Are the Jury (1973), David Belin, Assistant Counsel to the Warren Commission and one of the chief defenders of the Warren Report, asserts that “[t]he Rosetta Stone to the solution of President Kennedy’s murder is the murder of Officer J. D. Tippit. . . . Once [it] is admitted that Oswald killed Patrolman J. D. Tippit, there can be no doubt that the overall evidence shows that Lee Harvey Oswald was the assassin of John F. Kennedy.”
Wilkes, Donald E. Jr., "The Rosetta Stone of the JFK Assassination?" (2002). Popular Media. 141.