Röell appointed Willem Sandberg as the new curator in January 1938. Sandberg eventually took over as director of the museum in 1945. By 1962, the VVHK handed over most of its collection, including works by George Hendrik Breitner, Paul Cézanne, Jean-Baptiste-Camille Corot, Gustave Courbet, Vincent van Gogh, and Johan Jongkind.[11]