Thanks for the feedback on this post last night and yes, agreed with all sentiments mailed in, particularly reader GR who said they’re, “…the most awesome set of maps of all time…”.
Which is why I posted them when I found them*. Go have another look and by way of a handy hint, scroll slowly.
*With permission from a friendly site that didn’t want credit, I hasten to add. You can find them in other places on the internetwebpipes, though.