Original Type I photograph of Christy Mathewson as a member of the New York Giants, circa 1911. Matheson is pictured in mid windup as he warms up on the sideline prior to a game at the Polo Grounds. Four Brown Brothers credit stamps appear on the reverse, along with Mathewson's name ("Matty"). The photo measures 3.75x6.25" and displays a few light-to-moderate creases. Very Good condition. Culled from the Legendary Brown Brothers Photo Archive. PSA encapsulated as Type I Authentic.