Isn't it amazing how many of the people who actually met JFK went on to become the movers and shakers in the Democrat Party!
It's like they were destined to be.
He probably figured she’d go far, considering the strong political connections her family had. However, he would’ve never guessed that little girl would become the first female House Speaker! I suppose we have to give her that. Still, it’s sad that the first female House Speaker had to be someone like her! :^(
Presidents do a ton of meet and greets. The security was a lot more lax then, so it was a lot easier to get a picture of yourself with a president. People who want to be movers and shakers in a party will do anything to meet their president. Kennedy was also unique for the period in that he invited photo ops a lot more than other politicians like LBJ. There was also a "rock star" quality to Kennedy, so a lot of people wanted to meet him. People are going to save photos of themselves with the president, and obviously want to show them off.
Heck, I've got a picture of myself in the room with Bill Clinton. Oddly enough, although I've got a lot of connections to Crawford, TX, and have voted Republicans for years, I was never able to finagle a photo of myself with Bush, although I did get a chance to photograph him.
JFK was Clinton's hero, wanted to emulate him in every way, which Clinton did in some ways, certainly not in his penchant for the ladies, (not) getting away with it all, like JFK managed to do. It was a totally different era, the privacy discretion accorded JFK. 