I have all the documents of my grandfather (e.g. passport and so on) and also some letters written on 70's by his sister from Germany. I can get together some valuble informations of my family (Wohlgemuth) for the site about West Preussen.
By the way, Tschüss is very often used among the german medicine students that come to our University. In portuguese, we say "Tchau". Here you can see german people talking in portuguese!