My cousin Julie went to her local library and asked them to get the books for her through inter library loan- since they are no longer available to be purchased. She said they were hard to follow and that the names jumped around a lot- not all of the information was correct either. We were interested in the Diringer, Stretz, and Gantner names since they connect into our trees. Please drop me a line if you have any more questions about them- I can always email my cousin Julie who was able to view them a couple of months ago.