I don't have half an hour to watch the video, but I've read about Henry Darger. I thought only people with some social status and connections get to be Masons? I don't think Darger even would have had the money to spare on membership fees, and an unpublished and unpublishable book surely wouldn't be a controlled op. We're talking about a genuine outsider artist here, a loner who did menial work for a living. He grew up in an orphanage though, so he could well have witnessed something.