There are different versions of the photo. Some blurry, some not. Either the one on the left is a bad copy, or the one in the middle has been enhanced somehow.
I don't think it is Bush. It looks like a younger man with different facial features. In any case, one can't say it definitely is Bush.
You may have heard that Bush said he didn't remember where he was when Kennedy was assassinated, but here's something he wrote when he was in full command of his faculties:
Somebody in Tyler might be able to check this out in the newspapers of the time.