The artist Erin Lawlor recalls her time spent with the art historian, who wrote defining texts on artists such as Mark Rothko and offered critical support for the next generation

Cuban American artist Edel Rodriguez, labelled a “worm” for fleeing Cold War Cuba in 1980, tells story of his progress from impoverished boyhood to creating alarming covers for Time magazine

The author, the daughter of Portinari’s one-time assistant, on researching a little-known mural the Brazilian artist made in Paris in the 1950s