For decades, Super Bowl I was considered missing, despite having been aired by two networks in January 1967. In 2005, videotapes containing most of the CBS broadcast were recovered.
A color version of the original, unaired Star Trek pilot from 1965 (known as “The Cage”) was recovered in the late 1980s.
In 1984, the Museum of Broadcasting recovered four episodes of The Jackie Gleason Show from a CBS archive. Each contained a lost Honeymooners sketch.
Two pilots for All in the Family were produced for ABC in the late 1960s but never aired. For decades, they were missing until recovered in the 1990s.
In October 1954, an episode of Climax! called “Casino Royale” aired on CBS, the first adaptation of a James Bond novel. It was recovered in 1981
In 1989, CBS recovered the December 1956 Christmas episode of I Love Lucy, which only aired once and was never seen again.