COOPERSTOWN, N.Y. (AP) — The Baseball Hall of Fame has celebrated its 75th anniversary with a birthday cake cut by former stars Cal Ripken and Phil Niekro.

More than 300 people gathered in the museum’s showpiece Plaque Gallery on Thursday for the occasion.

Babe Ruth was the centerpiece of the first class to be inducted, and he attended the Hall of Fame’s official opening on June 12, 1939.

The Hall opens a revamped Babe Ruth exhibit on Friday. Ruth and Hank Aaron are the only players to have exhibits devoted solely to them in the Hall of Fame.