Roy Shepherd's Roses - How many are lost?

At a rose event this past week, there was talk of trying to get a collection of Ben Williams’ roses. That may be do-able because his son is still active with roses.

It got me to thinking about the roses that Roy Shepherd created. His Golden Wings is one of my favorites. And I went to Helpmefind only to find that many of his seem no longer in commerce.

Has anyone a collection, or maybe knows of someone who has a collection?