Bell 47 WEB Site: Whirlybirds Episode Guide,

"... This is the show that made the Bell 47 helicopter into a television star and a national icon of vertical flight. Conceived and produced by Desilu Studios, home of the much beloved TV sitcom I Love Lucy, Whirlybirds brought the look, sound, and capabilities of the Bell 47 helicopter into the mainstream of popular culture during the mid-1950s. For several generations of post-war television viewers, the 47 was to become the helicopter. The series debuted in 1957 and ran through 1959 for a total of 111 half-hour episodes, of which 106 eventually aired. Thirty-nine episodes were quickly re-syndicated by CBS under the name Copter Patrol. The show had a big draw; some estimates place the Whirlybirds weekly audience share as high as 25 million fans --- and this was the 1950s! ..."