1866-1944 1869-1954 1871-1920 1872-1939 1880-1954 20thcentury abstractart abstractexpressionism andré art artcollectionshaelen artists artnouveau artofthe1950s artofthe1980sand1990s artpatronagehaelen avant-garde(aesthetics) belgian belgium biography books brabant canadianart catalogs collectioncatalogs collectorsandcollecting criticism criticismandinterpretationderain criticismandinterpretationmatisse cubism dada earlymodernartmovements easterneuropean engravings europe european europeanpainting exhibitions expressionism france françoisvan french frenchart general generalaesthetics germanart germanhistory henri history illuminatedmanuscripts individualartists individualphotographers influence italianart kandinsky matisse metthey miscellaneousamericanart miscellaneousartisitictechniques miscellaneouseuropeanart miscellaneousphotography modern modernart modernism modernismo modernpainting museum nationalitiesinart newvisionphotography painting paris peoples philosophyofart pottery prints professionals russian sculpturaltechniques socialaspects sovietart surrealism tendancesnouvelles wassily women