At 94, photographer Harry Benson hasn't just been a witness ... smiled that way again after 1963,’" according to Benson. Another photo in the show is of Trisha Nixon looking on as her sister ...

READ MORE | Virginia bill aims to change Arlington's form of government to be more representative The Harry Benson gallery ... Leonsis inquired about Benson's photos, he vowed only to buy them ...

Harry Benson was just a few yards away from Bobby ... but Benson tried to keep a cool head and focus on the job at hand: Get the pictures, document history — as painful as it may be.

Harry Benson was just a few yards away from Bobby ... but Benson tried to keep a cool head and focus on the job at hand: Get the pictures, document history — as painful as it may be.