M.L.B. Players Association Working to Unionize Minor Leaguers - The New York Times

Scoop: Dominican Republic snags first MLB players union office outside U.S.

Following Contraction, Minor League Baseball Is Smaller. But Is It Better? - Global Sport Matters

MLB Players Association Attempting To Unionize Minor Leaguers

Majority of minor league baseball players turn in union authorization cards, paving way for MLBPA membership - ESPN

Minor League Baseball players set to unionize with the MLB Players Association

MLB players' association trying to unionize minor leaguers

Where Are They Now? Independent Baseball's Role In The Road To The MLB Stage - USPBL

Minor League Players to Get Big Salary Bump in Historic CBA

MLB to voluntarily recognize minor league union

MLB Players Association takes 'historic' step toward unionizing minor-league baseball players

AP source: Minor leaguers reach 5-year labor deal with MLB

We weren't getting paid enough': How the new MiLB CBA is affecting Arkansas Travelers