I am not sure of the answer to your question. I would say Illinois since that's where my side of the Zorge's have been for many years.
My sister, Teri, may have more info than I. Unfortunately, she doesn't do email much, but I can give you her husbands email address and hopefully he'll tell her about it. Also, I will mention it to her as well. You can email them at firstname.lastname@example.org