This volume pays homage to the wonderful teams and players from Azusa, La Verne, Claremont, Pomona, Chino, Cucamonga, Ontario, and Upland. A common thread of all these diverse communities was the establishment of baseball teams and, later, softball teams. Baseball played a critical role in advancing civil and political rights, labor reform, gender equality, educational integration, and cultural legitimacy. These remarkable photographs revive the often-overlooked history of Mexican American baseball in the Greater Pomona Valley.