Earning Their Stripes as Umpires and Referees - The New York Times
A New Study Shows Umpire Discrimination Against Non-White Players - Baseball ProspectusBaseball Prospectus
Should MLB use an automated strike zone in place of umps? “Yes, a thousand percent yes.” – The Denver Post
MLB appoints 1st black umpire crew chief
Ump files racial discrimination suit against MLB
Baseball Umpires Don't Get Overtime. Does That Affect Extra Innings? : NPR
Play Ball! UConn Magazine
MLB: Umpire Hernandez blew calls, losing World Series job
The History of Umpiring
Major League Baseball umpire loses appeal of discrimination lawsuit