Many thanks, Sweany, this is amazing. Christmas again

Not only the new book scans, but also everything else in the archive (I already had scans of the hobby experimente+modelle books, but I had never seen the hobby manuals or the clubhefte).
I have to admit that it makes me a little bit sad to think that all this stuff was basically "lost" for many years. I grew up in the 80s and my only source of information for physics and electronics were some old books from the local library and some boring courses in school where we didn't learn much. If I had had free access to all these documents as a child or teenager...
(Edit: grammar)