MLB appoints 1st black umpire crew chief
MLB names first Black and Latino born umpire crew chiefs – Pro Player Insiders
MLB appoints Kerwin Danley as its first black umpire crew chief
Porter, Johnson become MLB's 2nd, 3rd Black ump crew chiefs West & SoCal News - Bally Sports
MLB appoints 1st black umpire crew chief
Baseball: A trip through time with former MLB umpire Bill Hohn – The Times Herald
Bill Klem - Wikipedia
Embattled umpire Ángel Hernández alleges MLB altered evaluations to hurt minorities
MLB appoints Kerwin Danley, Alfonso Marquez as first African American, Latino crew chiefs - ESPN
Mitchell's Joe Schlimgen named new umpire-in-chief at annual SDABA meeting - Mitchell Republic
RIP, Doug Harvey, Hall of Fame Umpire & Springville Resident - GV Wire - Explore. Explain. Expose