Arthur Müller-Lehning – The Metropolitan Museum of Art https://www.metmuseum.org/research-centers/leonard-a-lauder-research-center/research-resources/modern-art-index-project/muller-lehning-a
Utrecht, 1899–Le Plessis, Mers-sur-Indre, France, 2000
Emma Goldman, and Rudolf Rocker—who had come to Germany directly from the Soviet Union