Photograph of Dr. Hans Koch shaking hands with Dr. Frank N. D. Buchman | National Museum of African American History and Culture
![PDF) (The painting of Dr. Koch by Otto Dix: Medicine and Modern Art) Das Gemälde des Dr. Koch von Otto Dix: Medizin und moderne Kunst PDF) (The painting of Dr. Koch by Otto Dix: Medicine and Modern Art) Das Gemälde des Dr. Koch von Otto Dix: Medizin und moderne Kunst](https://www.researchgate.net/profile/Friedrich-Moll/publication/270760646/figure/fig3/AS:614140024463361@1523433800008/figure-fig3_Q320.jpg)
PDF) (The painting of Dr. Koch by Otto Dix: Medicine and Modern Art) Das Gemälde des Dr. Koch von Otto Dix: Medizin und moderne Kunst
![Information über Paul Klee. by Hans Dr. (1881 - 1952) Paul Klee. Koch - from Stader Kunst-Buch-Kabinett, VDA and ILAB member (SKU: 3887AB) Information über Paul Klee. by Hans Dr. (1881 - 1952) Paul Klee. Koch - from Stader Kunst-Buch-Kabinett, VDA and ILAB member (SKU: 3887AB)](https://d3525k1ryd2155.cloudfront.net/h/882/760/1193760882.0.x.jpg)