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

This is really good. It is very similar to the shot taken by Mark Bell. The main difference is that he was on the other side of the reflecting pool. As you can see, the doorway was visible, and even from the other side of the pool, it would have been visible. This is not from the time of the assassination, and it looks relatively modern. However, trees only grow bigger with time, so if anything, I would expect the tree to have been smaller in 1963.