In August 2004, the City of Denver, Colorado announced it had been chosen by Patricia Still to receive the artworks contained within the Clyfford Still Estate (roughly 825 paintings on canvas and 1575 works on paper – drawings and limited-edition fine-art prints). The Clyfford Still Museum, an independent nonprofit organization, opened under the directorship of Dean Sobel in November 2011. The museum also houses the complete Still archives of sketchbooks, journals, notebooks, the artist's library, and other archival materials, inherited upon Patricia Still's death in 2005.