Thank you Laughingcoyote.
I'm new here and I coulda, woulda, shoulda done that "clicking" as you suggest but I was afraid I'd somehow lose the thread and perhaps the whole site. That has happened to me so many times with interesting sites that I've accidentally stumbled upon -- such as happened to me with this one.
I suppose I should also say "Thanks" for making me stay up all tonight in order to read all this fascinating material!
RB