I have begun to upload some files to the textbook site. They are PDFs (I can also upload Word format if preferred) containing some stuff I scribbled down at university and brought into readable form :-)
I hereby declare that it can be harvested for the textbook site. The text is German, but I think the images can come in useful.
I have also started a page where such files can be added to clarify their origin, so they can be used without copyright worries.
Magnus