Vintage photograph capturing Hall of Fame pitcher Christy Mathewson as a member of the New York Giants. Mathewson is pictured warming up on the sideline prior to a game at the Polo Grounds, circa 1910. Four Brown Brothers credit stamps appear on the reverse, along with the name "Mathewson," written in pencil. The photo (4.5x6.75"), which has been neatly trimmed to its current dimensions, displays light editorial markings on the front and a few light creases. In Very Good condition. Culled from the legendary Brown Brothers Photo Archive. PSA encapsulated as Type II Authentic.