A year ago Dick's widow June was living at 2715 Quaking Leaf Lane in Boynton Beach, FL33436.
As you may know, Dick did an enormous amount of research on the Rosacker roots and collected information from Rosacker families in the US, Australia, New Zealand.I have inherited his papers.
I only got to know him thru his quest for information. I was among the first to respond.Later he called me and asked whether I would be interested in carrying on his research.I hedged on that.But he explained that he wanted to leave his papers in the hands of someone whose surname was Rosacker, so that it would be easier to track them down.So I agreed.After Dick died, June sent me several boxes of materials.
So if your question is about Rosackers, perhaps I can help you.I also have the names of his daughters and spouses, but I don't know where they live.