Like a survey of Western art , among the most important collections are classical works by Fra Angelico , Van Eyck , Derer , Rembrandt , Hals , Titian , Van Dyck , and Rubens , and Impressionist works by Manet , Monet , Renoir , Gaugain , Toulouse-Lautrec , C ? ? zanne , and Van Gogh , among many others .
Some other paintings have been sold out of the collection over the years .