‘The discovery of Alfred Wallis by Ben Nicholson and Christopher Wood on a visit to St Ives in 1928 ~ 50 years after’ Oil on board. 20.6 x 33.4cm. 1978-9. © Andrew Lanyon. Tate collection T15121. Presented to the Tate by Sarah and Sir Alan Bowness CBE, in honour of Chris Stephens 2018 .