‘A Journey into the Unknown’ brings together eight abstract painters in London. 'To us art is an adventure into an unknown world, which can be explored only by those willing to take risks.' — Adolph Gottlieb and Mark Rothko (with the assistance of Barnett Newman), Letter to Edward Alden Jewell, Art Editor, The New York Times, 7 June 1943 In June 1943, Adolph Gottlieb and Mark Rothko exhibited their new paintings in an exhibition of the Federation of Modern Painters and Sculptors. Edward Alden Jewell, a senior critic at the New York Times, gave a lukewarm review of the show,...