I am Jim Bell, author of the Assassination Politics essay, at jdb10987@yahoo.com.   
I'm trying to implement public-key message signing with Mailvelope software, not with much success so far.  I haven't really done signficant amounts of encryption since the 1990's, not much even then, and then I used PGP, and not with an email client.
I realize that I don't have a public key available; I'd like to publish it, but there probably haven't been any key-signings nearby.  I'm trying to (re-) learn the bare bones of this.  This is my second attempt.    The first attempt at signing simply lost my message, for reasons entirely unknown.
I'd like to prove who I am.  At least initially, I though of using a Skype call, jimbell887, to talk to a few of the more credible people around here.  That will, at least, reduce the level of doubt until I can get up to speed on this very irritating software.
I will put this message, and then have a signed copy of this message.  I'd like to somehow include a copy of my public key, but as I said, I cannot yet figure out how do to that.  

             Jim Bell