Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

 I have made a trilogy of images showing SS Agent Roy Kellerman giving the tie to JFK. You can actually see the tie in the middle one.

This is the literal statement by the White House Historical Association, which they put next to an image of the Ft. Worth tie.:

"On the left is the Necktie belonging to President John F. Kennedy, early 1960s. President John Kennedy wore this necktie while flying to Dallas, Texas, on November 22, 1963. Just before getting into the presidential limousine in which he was assassinated, Kennedy changed ties and placed this one in his jacket pocket. Jacqueline Kennedy later told White House doorman Preston Bruce, “The president would have wanted you to have this.”

So, the WHHA did not say who produced the tie, but we have video of Roy Kellerman doing it. And keep in mind that the fact that JFK put the first tie in his jacket pocket PROVES BEYOND THE SLIGHTEST DOUBT that it happened at the limo because if he changed his tie on the plane, he would have left it there. Why bring it? There is no conceivable reason. Not in your wildest and most reckless imagination could you come up with a reason why JFK would have brought the other tie along with him if he could just leave it on the plane.