London’s Victoria and Albert Museum announced that they discovered a previously unknown oil sketch by English Romantic painter John Constable. The sketch of trees, which dates back to 1821 or 1822, was found tucked beneath another work by the artist, “Branch Hill Pond: Hampstead.” Conservators had removed the painting’s lining while preparing for the upcoming exhibition, “Constable: The Making of a Master.”

Constable’s daughter donated the contents of the artist’s studio -- including 92 oil sketches, 297 drawings and watercolors, and 3 sketchbooks -- to the Victoria and Albert Museum in 1888. The recently discovered sketch is currently on view at the institution.