While baseball may have long been considered an all-American sport in which a melting pot could celebrate ethnic heroes like Joe DiMaggio, Lou Gehrig, Hank Greenberg, Connie Mack, and Stan Musial, racial segregation excluded blacks from an otherwise democratic picture. Such was certainly the case in Texas, where, in the state's first professional matchup soon after the Civil War, the R. E. Lees faced the Stonewalls--and African Americans, not surprisingly,...