Would you like to be JFK's mom? I guess you'd like that?
I think, IF time travel is possible, it opens up new timelines every time you change something after a jump. A new timeline is created that is different from the other one (that still exists within it's own right, because of the probability that the person to jump into yours, will not jump into yours, because there is a decision to be made to do it or not. Also accidents can happen, etc. anyway, there is a probability attached to everything, even time jumps, which in turn means, that the untouched timeline will continue to exist in any way, while others are being split from the orig. one after any kind of influence. Same happens all the time going forward, whenever you make a decision, even without time jumping, so the universe is infinite, anyways. Continuously splitting into new possible timelines.
Back to the hot topic: If the book was written and brought back in time, it would start existing in another timeline, not in ours

if that jump came from our timeline, according to the split up theory.
That means it cannot just appear when it's previously never been there in our history books.
The fact, that we never heard of it doesn't proof it's never been there. If it was, and was hidden, a jump from our timeline would have been possible.
If it didn't and now it's here, it would proof another theory of time travel, exactly as it is shown in Back to the Future, that you can actually ALTER your own timeline, without a split up. If things get changed they appear right in front of your eyes. People would morph all the time and paper snippets from new articles would change appearance all the time.
I don't think, we see enough of that, so i conclude, the changing of the picture as in Back to the Future is not possible, timelines get changed, they split up.
I could consider marking a certain person for timeline parallelity, or whatever you can call it. on a microscopic level their cells would be altered accordi

The time jumper experience would have been brought on by someone else not me. At that time really I had no idea about any of this stuff. If I had know more about things at the time Nana would have messed with him on a large scale, would have had fun with it. Nope never had being JFKs Mom enter my thoughts until he jumped in and started it.

He kept talking about needing to talk to her at the age they met and got pissed off when I took my dreams back to being a child instead. It was a case where I was in the dream but I knew I was in the dream and I also knew he was one of the little boys in the dream with me even tho I had no idea who he was.

He got pissed off over it and me asking questions & deleted all of his existence to that point even all his posts & even his DMs.

Have researched her a very little since then and if I dont have her mistaken for his grandmother, she was a bit psychotic it would seem to me.

IngersollLockwood . com had some interesting links about the Last President and time travel.

Google archive is the only to source them now i believe

Nana thinks that they messed up a bit.

They built ppl up with a countdown to what ppl were led to think was some big disclosure or huge take down and it wasnt. It was just them telling ppl about their project. They pissed ppl off, and imo was a bad branding decision.