Atlas der Oszillografie

Found a lovely German oscilloscope manual in a 25¢ book box. It was written by Heinz Richter in German of course.  He also wrote several  introductory-level radio and electronics textbooks in Germany including Radio Praxis Fur Alle, Radioteknik Fur Alle,  and Radiobastlen Fur Jungen. He held 10 patents of his own and was a frequent writer of trade articles. I can't read a word of the book, but I like the pictures.  File this under radio Artifacts circa 1961.