NFL says each team must hire minority offensive coach amid push for diversity - ABC News
Black NFL coaches lament hiring policies that fall short
How many coaches does and NFL team have in the coaching staff?
Football Announces Coaching Staff Additions, Changes - Central Michigan University Athletics
Bill Belichick has the NFL's least diverse coaching staff - NBC Sports
Data show how bad the NFL's racial equality problem is among coaches
Which NFL teams have the most diverse coaching staffs?
Grappling with lack of diversity among NFL coaches, GMs
How Black NFL coaches, despite Rooney Rule, are denied top jobs - Washington Post