The Mill, Pendlebury, a painting never publicly exhibited or featured in any book, was found in the estate of Leonard D. Hamilton, a British-American researcher, after his death in 2019. Hamilton was a Manchester Grammar School boy who studied at Balliol College, Oxford, and Trinity College, Cambridge, before moving to the US in 1949. The work was sold, at Christie's modern British art auction, with an estimate is £700,000 to £1 million. The work sold on 21 January 2020, to a private collector, for £2.65 million.
