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Although these are rather scribbled sketches, they clearly shows the ruins of Dunbar Castle that Turner sketched numerous times in the three 1818 Scottish sketchbooks. The top sketch shows the column-like remains of the castle that are clear in Turner’s Provincial Antiquities illustration, Dunbar, circa 1823 (watercolour, private collection),1 and the sketch at the bottom of the page shows the rocks going out to sea upon which the ruin stands. Although most of the drawings of Dunbar in this sketchbook appear in the first half, there is another sketch on folio 54 (D13415; CLXV 52).
Andrew Wilton, J.M.W. Turner: His Life and Work, Fribourg 1979, p.426 no.1066.