In reference to the Sandweiler Line postings on Janurary 29, 2001. Dear Patrick, Sorry it's taken so long to get back to you.
Time goes by to fast.
I have visited the new Yahoo site and see where you posted the diagram I sent. It's still not real clear where it came from. From a few notes and letters it looks like it was given to my father by Dick Birkel a cousin of my father. Clara Demuth a descendent of Michael Demuth and Anne Meysneburg married into the Birkel family. I know some Birkel relatives traveled to Luxembourg in 1979 and I think they obtained the chart.