MLB to allow pitchers, catchers to use anti-sign-stealing technology during regular season - ESPN
Yankees letter from Rob Manfred reveals team engaged in video sign-stealing before MLB crackdown in 2017
Yankee letter,' explained: What's revealed in early release of letter by MLB commissioner Rob Manfred
What did New York Yankees do -- and does it matter? What you need to know about sign-stealing letter - ESPN
Leaked 'Yankee Letter' confirms team stole signs in 2015-16, which MLB hid from public
Astros, Red Sox sign-stealing timeline: Everything we know about MLB scandals
Judge orders letter detailing sign-stealing scheme by Yankees be unsealed
Leaked Yankees letter reveals minor transgressions we already knew
MLB Letter Confirms Yankees Used Technology for Sign Stealing - The New York Times
Houston Astros sign stealing scandal - Wikipedia
New York Yankees appeal release of Major League Baseball letter detailing sign-stealing findings - ESPN
Leaked Yankees letter reveals minor transgressions we already knew
MLB news: Infamous Yankees Letter set to be released after denied appeal
The Red Sox used an Apple Watch to steal signs from the Yankees