Maurice Solway is on the far right hand side of the photo. In the centre is Ysaÿe with his hands upon Viola Mitchell's shoulders. Beside her is Nathan Milstein. Other people depicted in the photograph, but not identified, are: Nina-Magda Lavanchy, Mary Lotte, Mozia Novomist, Jeannette Dincin (who became Ysaÿe's wife three years later, after the death of his first wife), Robert Velton, and Grish Monasevitch.
Not an original photograph. Oversize print and negative from original photograph.