Mystery solved. In my site OurWindowOnNature.com I make all the posts, but both my wife and I create the material. I actually have three log-ins so the posts show up with the name of the actual author (or authors.)
I don’t know how the post got market “Private”, but the reason I couldn’t see it was being logged in as one of the other two “users.” When I logged in correctly, it was just a matter of unchecking Private.
