Jon Gruden Was a Consummate NFL Insider. Then He Became an Outcast. - The Ringer
Tipping point - How Dan Snyder nearly survived as Commanders owner - ESPN
Jon Gruden resigns after racist, homophobic, sexist emails emerge - The Athletic
Commentary: Now that Jon Gruden is gone, NFL must root out all bigotry - Chicago Sun-Times
Jon Gruden, American Football Wiki
Tipping point - How Dan Snyder nearly survived as Commanders owner - ESPN
Raiders coach Jon Gruden apologizes, says he's not a racist in wake of email controversy
Jon Gruden, ex-Raiders coach, said 'worse things' during NFL career
Keyshawn Johnson responds to Jon Gruden scandal: 'He's a fraud'
NFL loses bid to scuttle Gruden lawsuit over leaked emails
Raiders coach Jon Gruden again says he's not a racist, apologizes for 2011 comment - MarketWatch