That is one of those "copy cat" recipes that I found on the internet. Apparently Dillard House is famous for their Pototoes O'Brien. The Italian dressing makes the recipe sound interesting.
The Dillard House is located in a beautiful setting overlooking one of the most scenic valleys in that area. It's just below the NC State line. To my knowledge there is only one restaurant by that name and you'd better be hungry when you go there. We don't tend to go that often since it's an automatic 2 or 3 pounds each visit.