My goodness, what fun this day has been! Thanks to all of you for your input. I have emailed my horticulturalist at the Frick Collection, where I work,, to see if any of our providers - one of which, I think, used to be Sprainbrook - , has access to 238th St. Ivy. It's really funny, because we used to be able to get it everywhere.
And yes, Rick, we might be able to propagate from our existing plant. I think we were looking for an easy out…..as I say, it used to be so easy to find this cultivar.
Susan