Andrew Wilton, J.M.W. Turner: His Life and Work, Fribourg 1979, p.327 no.246, reproduced, as private collection.
There are grey paint smears along the bottom (outer) edge of the leaf.
Inscribed by Turner in pencil ‘Honble Edw: Spencer Cowper | Lord Cowper’s | George St: Hanov. Sqr’ and ‘10 Guineas’ below; stamped in brown ink with Turner Bequest monogram.