History of the National Football League on television
NBC was the first major television network to cover an NFL game, when on October 22, 1939, it broadcast a game between the Philadelphia Eagles and the Brooklyn Dodgers; the network was still only in its infancy, with only two affiliates, the modern day WRGB (now a CBS affiliate) in Schenectady and W2XBS in New York City. Portions of that game still survive via films, but the film is not footage from the telecast (recordings of television broadcasts did not begin until 1948). The use of a sideline camera, the sole camera used in the 1939 broadcast, would become the standard for all future NFL broadcasts until 2017; the angle is particularly suited for estimating yardage, compared to more mobile camera angles that began to appear in the 21st century.
History of Monday Night Football
During the early 1960s, NFL Commissioner Pete Rozelle envisioned the possibility of playing at least one game weekly during prime time that could be viewed by a greater television audience (while the NFL had scheduled Saturday night games on the DuMont Television Network in 1953 and 1954, poor ratings and the dissolution of DuMont led to those games being eliminated by the time CBS took over the rights in 1956). An early bid by the league in 1964 to play on Friday nights was soundly defeated, with critics charging that such telecasts would damage the attendance at high school football games. Undaunted, Rozelle decided to experiment with the concept of playing on Monday night, scheduling the Green Bay Packers and Detroit Lions for a game on September 28, 1964. While the game was not televised, it drew a sellout crowd of 59,203 spectators to Tiger Stadium, the largest crowd ever to watch a professional football game in Detroit up to that point.