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

Here is another view showing Wolfe stretching to guide Oswald to the left side of the long axis of the ambulance. 

Remember: it had to be left or right because one or the other middle seats had to be folded down in order to accommodate the stretcher. So, they had the left seat folded down, and Oswald was slid in on that side. Then the two cops, Dhority and Leavelle, squeezed in on the right side, and we saw them do that. And they disembarked the same way when they arrived at Parkland. So, there is no doubt and no question that Oswald rode on the left side of the long axis of the ambulance. Presumably, the Bieb rode on the right side of the middle compartment. 

And you're wrong, Backes: I wasn't referring to that Canadian guy. I never thought of him. I was thinking of Leave it to Beaver, where you had "the Beav." So, there was the Beav and the Bieb.  

So, once again, and to no surprise, YOU ARE WRONG.