Not really related, and a bit of a "woo" book, but there's a book called Latitude 33: Key to the Kingdom by Walter Bosley that suggests SRI designed the original Disney Land in a certain way to harness some sort of "woo" energy on the 33rd parallel. There's a bit in it though (I'm 99% its in this book) that involves some peculiar man appearing out of time and place enjoying the park. I hadn't thought of that book in years but this triggered that.
As a work of non-fiction it is dubious, but it's a fun read as a work of fiction.
Now, wholly unrelated, but also a fun dubious as non-fiction but fun as fiction book: The Vertical Plane by Ken Webster which alleges that for 2 years in the 1980s messages from the 16th century and the future would appear on the author's BBC Micro computer with some interaction.