Short answers, pulled from the story.
NFL on CBS first aired on the 30th of September 1956, with a game between the Washington Redskins and the Pittsburgh Steelers. CBS acquired the rights after the DuMont Television Network, the NFL's primary television partner, ended operations in 1956.
Fox placed a bid of $1.58 billion for the four-year NFC broadcast contract, far exceeding CBS's offer of $295 million per year. The NFL accepted Fox's bid on the 18th of December 1993, stripping CBS of NFL coverage after 38 years.
Ray Scott called the first half of the 1967 NFL Championship Game (the Ice Bowl) between the Green Bay Packers and Dallas Cowboys, with Jack Buck handling play-by-play for the second half. Frank Gifford provided color commentary for the entire game, and Pat Summerall served as a sideline reporter.
CBS's broadcast of Super Bowl XVI on the 24th of January 1982, achieved a 49.1 rating and a 73 share, making it the highest-rated Super Bowl of all time up to that point. The San Francisco 49ers defeated the Cincinnati Bengals 26-21 in that game.
The NFL Today is a pre-game show that CBS debuted in 1975, originally hosted by journalist Brent Musburger and former NFL player Irv Cross. It became the highest-rated program in its time slot for 18 consecutive years, longer than any other program on television.
CBS returned to NFL broadcasting on the 6th of September 1998, after a four-year absence. The network came back by taking over the American Football Conference package rather than the NFC package it had held for the previous 23 years.