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.
NBC
Prior to the first commercial television broadcasts and paid advertisements on WNBT, non-paid television advertising existed on an experimental basis dating back to 1930. NBC's earliest non-paid television commercials may have been those seen during the first Major League Baseball game ever telecast, between the Brooklyn Dodgers and Cincinnati Reds, on August 26, 1939 over W2XBS. In order to secure the rights to televise the game, NBC allowed each of the Dodgers' regular radio sponsors at the time to have one commercial during the telecast. The ads were conducted by Dodgers announcer Red Barber: for Ivory Soap, he held up a bar of the product; for Mobilgas he put on a filling station attendant's cap while giving his spiel; and for Wheaties he poured a bowl of the product, added milk and bananas, and took a big spoonful. Limited, commercial programming continued until the U.S. entered World War II. Telecasts were curtailed in the early years of the war, then expanded as NBC began to prepare for full-time service upon the end of the war. Even before the war concluded, a few programs were sent from New York City to affiliated stations in Philadelphia (WPTZ) and Albany/Schenectady (WRGB) on a regular weekly schedule beginning in 1944, the first of which is generally considered to be the pioneering special interest/documentary show "The Voice of Firestone Televues", a television offshoot of "The Voice of Firestone", a mainstay on NBC radio since 1928, which was transmitted from New York City to Philadelphia and Schenectady on a regular, weekly basis beginning on April 10, 1944. The series is considered to be the NBC television network's first regularly scheduled program.
On V-E Day, May 8, 1945, WNBT broadcast several hours of news coverage, and remotes from around New York City. This event was promoted in advance by NBC with a direct-mail card sent to television set owners in the New York area. At one point, a WNBT camera placed atop the marquee of the Hotel Astor panned the crowd below celebrating the end of the war in Europe. The vivid coverage was a prelude to television's rapid growth after the war ended.