Ah - another omission. You fail to mention that you also posted your query on the Oklahoma forum and a lively discussion has been going on there! My findings here are the same as on that forum - they found a bit more than I have but there are more volunteers there! (phooey - no fair) Then one volunteer sends you secret papers by email that answer your riddle (or partly do so), and you're not mentioning that to me either. Ay yi yi.
Well, we're all feeling our way along on this blessed planet Earth of ours and doing the best we can I'm sure.