Ten MLB Umpires Retiring, Most Since 1999
Porter, Johnson become MLB's 2nd, 3rd Black ump crew chiefs
Mike DiMuro retires, Chad Whitson becomes fulltime MLB ump
Ray Miller, ex-manager and coach in Orioles HOF, dies at 76 – troyrecord
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MLB makes history by naming its first black and Latino-born umpire crew chiefs
MLB Will Drop FTX Patches For Umpires In 2023, But Partnership Dilemma Remains
Southern Baptist minister doubles as umpire in this year's World Series - The Christian Index
The Fates of the 22: MLB Umpire Resignations in 1999 – Society for American Baseball Research
Frank Pulli, First Umpire to Use Replay, Dies at 78 - The New York Times
Umpire (baseball) - Wikipedia
Longtime MLB umpire Joe West to retire after 2021 post-season
MLB will see 10 rookie umps replace veterans as position faces more changes, challenges than ever - The Athletic
Controversial MLB umpire Joe West announces retirement with record in hand
Retired MLB umpire, Minot HS grad Gary Cederstrom returns to ND to officiate HS football