More than 500 works by some 100 artists, including Georges Braque, Jean Dubuffet, Marcel Duchamp, Alberto Giacometti, Vasily Kandinsky, Pablo Picasso and Joseph Steib, testify to how these creators resisted and reacted to adversity, ???making war on war??? with the only forms and materials available in those times of penury, even in environments of incredible hostility toward any expression of ind