Looking back at the history of the pioneering dealership in post-war art, plus a thought-provoking new installation in Madison Square Park and Caravaggio's The Martyrdom of Saint Ursula

The signing of the artist, who will continue to be represented by Jessica Silverman in San Francisco, comes at a time of increasing—and overdue—recognition of Indigenous artists within the US art world

From Faith Ringgold to Frank Bowling, the UK artist and film-maker shows his regard for long overlooked artists