Joseph Mallord William Turner, RA (1775-1851), A windmill with cottage and wagons. Pencil and watercolor; 7 x 9 ¼ inches (178 x 235 mm). Photo courtesy Martyn Gregory.

Martyn Gregory. 'British watercolours and drawings 1770-1920'. Exhibiting at Pia Gallo, 53 East 64th Street, Third Floor, New York, NY 10065. Tel +1 212 369 4420 - 34 Bury Street, St James’s, London, SW1Y 6AU. Tel +44 20 7839 3731 - Email: mgregory@dircon.co.uk - Website: www.martyngregory.com. Master Drawings New York. Saturday 25 January to Saturday 1 February 2014