File:Johann Carl Müller im Juli 1930.jpg
![File:Johann Carl Müller im Juli 1930.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/70/Johann_Carl_M%C3%BCller_im_Juli_1930.jpg/484px-Johann_Carl_M%C3%BCller_im_Juli_1930.jpg?20230427121140)
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