march 13-26: These days, bats crack, balls soar and crowds roar no matter the color or religion of the player. But it wasn’t always that way. Learn the role baseball played in stirring America’s melting pot with a visit to Chasing Dreams: Baseball and Becoming American. National Museum of American Jewish History, 101 S. Independence Mall East, Philadelphia. Call (215) 923-3811 or visit nmajh.org.