Bob Costas and NBC broke up over concussion remarks
How questioning the safety of football cost a broadcaster his career, NewsCut
Costas Tonight: State of the NFL Thursday on NBC Sports Network
Bob Costas Says His Comments About Concussions Cost Him the Super Bowl Broadcast
Live From Super Bowl LII: NBC Deploys Quartet of Onsite Sets for Six Hours of Sunday Pregame Programming
Super Bowl for sports fans and others
Bob Costas Facts for Kids
Costas Tonight Archives - NBC Sports PressboxNBC Sports Pressbox
Bob Costas: I Was Forced From Super Bowl 52 - Sports Media Watch
Super Bowl - NBC Sports PressboxNBC Sports Pressbox
Bob Costas on Game 7 of the World Series & More - 11/02
Super Bowl 49 TV viewing guide
Super Bowl 49 guide: Patriots-Seahawks time, TV schedule
Bob Costas Will Host Monthly Show On NBC Sports Network Starting In Spring