Though much has been written about Negro Leagues players and Black major leaguers of the integration era, little attention has been given to the accomplishments and struggles of Black minor league pioneers. This work is a history of minor league integration with complete records for the more than one thousand players of color who toiled in Organized Baseball's minor leagues from 1946 to 1959, competing against the odds for a shot at the big leagues that few would get. This work is a tribute to an underappreciated group of men who helped clear away the vestiges of a racist system that kept many of the game's best players from gaining the recognition they deserved. Only about 10% would ever appear in the major leagues, but the careers of Black major league stars of the 1950s and 1960s were built on the backs of this largely forgotten generation of players. The underlying statistical and demographic information is compiled in a comprehensive register of players that were not, or probably would not have been, given a chance in Organized Baseball prior to the crossing of the color barrier due to their racial heritage.