No worries here, Paul. I'm sure we can find another map at some point. And ditto what crittergarden said, great to get a good discussion going, eh?
As for me, I think I'm one of the few folks that don't mind poison oak/ivy, etc. And yep, probably because I'm not affected by it (yet!). I think it has its place, usually far far away from most folks!

But I also am grateful it feeds so much of the wildlife with its berries in the winter. Course now, I'm also one who loves pokeweed, even to the point of blogging about it once! It, too, is a pretty plant to me, a natural ornamental, and does double-duty feeding quite a lot of the birds around here in the winter.
Looking forward to your next article!
Shoe