Under de Montebello's directorship, the Met acquired many major private collections, notably the Jack and Belle Linsky Collection of European Paintings, sculpture, and decorative arts; the Heinz Berggruen collection of works by Paul Klee; the gift of 10 paintings by Clyfford Still by the artist's widow; the Annenberg Collection of Impressionist and Post-Impressionist paintings; the Florene Schoenborn collection of 20th-century works; the Jacques and Natasha Gelman Collection of modern paintings; the Gilman Paper Company Collection of 19th-century photographs; the Muriel Kallis Steinberg Newman Collection of Abstract Expressionist and other modern works; and most recently, the Diane Arbus archive.