Perspectives: Baseball umpires spur litigation in Minnesota – Minnesota Lawyer
Umpire (baseball) - Wikipedia
The Average Yearly Income for Major League Umpires
MLB Umpires Association, adamant that crews are simply upholding rule, address home-plate collision rule in statement - ESPN
Retired MLB umpire Dale Scott on coming out, Pride, and robo umps - Pinstripe Alley
MLB: Umpire Hernández blew calls, losing World Series job
MLB umpire job responsibilities
MLB umpire Malachi Moore a trailblazer from Compton Youth Academy
The Umpire Strikes Back - WSJ
MLB umpire job responsibilities
MLB will see 10 rookie umps replace veterans as position faces more changes, challenges than ever - The Athletic