Robert Graham Dryden Alexander ( 1875 - 1945 ) was a British painter. Robert Graham Dryden Alexander s works have been put up for auction numerous times, with realized prices varying from 69.17 USD for The Thames at Tilbury; and The promenade in 2006 to 150.2 USD for FIGURES ON A BEACH in 2008 , based on the size and medium of the artwork.