Artchive - Kasimir Malevich: 20 some works to explore.
Kasimir Malevich: The Commissar of Space: In this series of images, John Goto makes a reading of the mysterious final years of Kasimir Malevich, setting his life and art against the upheavals of the early Stalinist period and its aftermath in contemporary Russia.
Olga's Gallery - Kazimir Malevich: Collection of works of the Russian artist with a biography and historical comments.
WebMuseum: Malevich, Kasimir: Biography, links to images and further information.