The Lock', John Constable, David Lucas, published 1834 | Tate
John Constable painting 'The Lock' sells for $35 million - Los Angeles Times
Flatford Lock, A Path by a River | Works of Art | RA Collection | Royal Academy of Arts
John Constable's The Lock set for auction - BBC News
London, UK. 4 December 2015. The Lock by John Constable, for the first time on the market for 160 years, estimate: GBP 8-12 million. Press preview of Sotheby's London Evening Sale of