Gaston and Jossé (called Joseph) Bernheim-Jeune – The Metropolitan Museum of Art https://www.metmuseum.org/research-centers/leonard-a-lauder-research-center/research-resources/modern-art-index-project/bernheim-jeune
Brussels, 1870−Paris, 1953, and Brussels, 1870−Lyon, 1941
The favorable attitude toward experimentation that led him to exhibit the Impressionists
