The important, nearly forgotten German-Jewish museum expert and art collector Curt Glaser (1879–1943) was forced to emigrate by the National Socialists and sold the majority of his art holdings in Berlin in 1933. Through the whereabouts of works once owned by him, the Kunstmuseum Basel reached an agreement with Glaser’s heirs that is recognized internationally as “best practice,” and in connection with this is honoring Glaser’s work in an exhibition. The catalogue provides richly illustrated insights into Glaser’s fascinating collection, with works by Edvard Munch, Max Beckmann, and Henri Matisse. Essays link new research on this advocate of modernism and his collecting of modern art and embed his fate in current questions connected with formerly Jewish art holdings in public museums.