Dear Uwe,What a very interesting history you wrote about the Klingenbergs.My granddaughter's Gr.Grandmother was a Klingenberg from Southern Illinois,USA. I think they came from the area of Hanover. So your research meant a lot to us. Since I come from a all German family your statement about the Telephone Directory on CD. where can I send to buy one of these?Thank you so much for the effort.Pat N.in Indiana.