MLB Letter Confirms Yankees Used Technology for Sign Stealing - The New York Times
MLB letter to New York Yankees detailed illicit use of technology prior to 2017 sign-stealing edict - ABC7 New York
Yankees letter confirms team was cheating in 2015-16, per report
Leaked Yankees letter reveals minor transgressions we already knew
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Reports: Yankees used dugout phone, replay room to steal signs in 2015-16
MLB, Yankees statements on 2017 letter
MLB letter to New York Yankees about sign-stealing allegations to be made public despite appeal - ESPN
New York Yankees sign stealing: Team violated MLB rules in 2015-16
Commissioner's 2017 Letter to the Yankees on Sign Stealing - The New York Times
Sign stealing - Wikipedia
Leaked 'Yankee Letter' confirms team stole signs in 2015-16, which MLB hid from public
New Book Claims Astros Continued Sign-Stealing Scheme in 2019 : r/baseball
What did New York Yankees do -- and does it matter? What you need to know about sign-stealing letter - ESPN
Notable suspensions and discipline in baseball history
