William Roberts Studio per il dipinto perduto ‘Two-Step’, 1915 Matita, acquerello e guazzo ©Trustees of the British Museum, Londra © The Estate of John David Roberts. By courtesy of the William Roberts Society

William Roberts Studio per il dipinto perduto ‘Two-Step’, 1915 Matita, acquerello e guazzo ©Trustees of the British Museum, Londra © The Estate of John David Roberts. By courtesy of the W

William Roberts Studio per il dipinto perduto ‘Two-Step’, 1915 Matita, acquerello e guazzo ©Trustees of the British Museum, Londra © The Estate of John David Roberts. By courtesy of the William Roberts Society