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

That tall guy in the school picture from South Oak Cliff High School was definitely Nat Pinkston, and I'm not the one who drew the arrow to him. But besides that, we can confirm it just by comparing to his other known images.

So yes, that is a match. That is Pinkston. And he was definitely not the pipsqueak that Oswald was talking to- and like he knew him. That pipsqueak was James Bookhout.