The term 'Cooperstown's Cap ___' is referring to ANSON (5 letters). ANSON is a reference to the baseball Hall of Fame in Cooperstown, New York. The Hall of Fame is known for its iconic red cap with a blue bill, which is often referred to as 'ANSON's Cap' in honor of the first inductee into the Hall of Fame, Cap ANSON. ANSON was a 19th century baseball player who played for the Chicago White Stockings and is credited with helping to popularize the sport.