Great post, Chris! The Lincoln/Kennedy similarities are fascinating coincidence/synchronicities. Another example is the post I made here about the fictional Titanic account that happened 14 years before the real Titanic tragedy.

I think any type of coincidence is the revelation of a meaningful underlying pattern of association, so I am more fond of the term synchronicity which implies this.

I find synchronicity pretty much daily (helped by the fact that I write them down). It comes with the territory of paying attention to the spirit world and all of the seemingly behind-the-scenes activities that are often ignored in the hustle and bustle of life. An example was the other day when I found Dawn's serpent photo while I was in the midst of creating a webpage on serpents and then received a photo from you with the same theme.