Circumstantially I'm afraid, nothing more.
In the above Roger Craig states:-
Jim also asked me about the arrests made in Dealey Plaza that day. I told him I knew of twelve arrests, one in particular made by R. E. Vaughn of the Dallas Police Department. The man Vaughn arrested was coming from the Dal-Tex Building across from the Texas School Book Depository. The only thing which Vaughn knew about him was that he was an independent oil operator from Houston, Texas. The prisoner was taken from Vaughn by Dallas Police detectives and that was the last that he saw or heard of the suspect.
The picture above, from Robin Unger's site listed as the "Cook/Cooper Gallery" is one of three showing this juvenile crossing the junction at Elm & Houston. George W. Bush was 17 at the time. This would, I suspect, be whilst daddy was being questioned. Although he is supposed to have phoned from Tyler, Texas with supposedly pertinent information, he could of course have been anywhere.
This article gives a fascinating account of just how flimsy Poppy's cover story for the day actually is. And if he wasn't in Dallas until the evening of the 22nd, why would junior be there at this time when Ma & Pa were in Houston, allegedly.
The only thing in question here is whether that photo is George Dubya Bush. Judge for yourself