Trustees at the Tate Gallery turned down 21 paintings by the American artist Mark Rothko in the late 1960s which could now be worth as much as $1 billion (£630 million), according to notes written by its late director. Rothko was in talks with Sir Norman Reid to bequeath 30 works to the London gallery, but in the end Tate took only nine, according to The Art Newspaper. Now it has emerged that the abstract artist, who painted vast canvases of reds, mauves, blacks and greys, "touched on the possibility of giving all the paintings to the Tate".