Welcome to NGA,
@BillNorman .
I'm not William, but I found this source:
http://www.naturehills.com/ser...
I imagine there are others -- try searching Google using "Amelanchier Regent" (without the quotation marks).
(out of curiosity -- who is the "William" that mentioned this variety -- was it just a comment in one of the forums, or maybe an article from the "Learning Library" ? )