I don't think any of your names have significance for my family, as far as I know. But your German book sounds like a great resource. Does it have years? Or do you know when it was published? I guess your family would be considered German-from-Russia, as mine are. Have you checked out Germans-from-Russia web sites? They have some good resources. Also I did a search for Nitschke at the LDS Church website, which turned up many, many possibilities, but none that I can claim, so far. I know it's aggravating doing this by yourself. I am doing the same thing, but have a fairly small family. It would be great to have more than one person working on it, at least to have someone to gripe to! Here's a few links that might be of interest. Let me know if you find anything we might share, as I will do with you, also.