April 16 1911
Pittsburgh Post-Gazette, Pittsburgh, Pennsylvania, Sunday, April 16, 1911
Chess Masters in International Tournament at San Sabastian
From left to right—Frank Marshall, Amos Burn (standing), David Janowski, Ossip Bernstein, Oldrich Duras, Akiba Rubinstein, Geza Maroczy (seated), Rudolf Spielmann, Paul Saladin Leonhardt, the referee; Jose Capablanca, Aron Nimzowitsch, Milan Vidmar, Hoffer, Richard Teichmann, Siegbert Tarrasch, and Mieses, tournament director.
July 16 1911
Pittsburgh Post-Gazette, Pittsburgh, Pennsylvania, Sunday, July 16, 1911
Dr. O. S. Bernstein
The Russian Chess Master.