Coming soon to The Disney Ashman Demos Network, the original 1955 telecast of Peter Pan, staring Mary Martin and the original Broadway cast as a part of "Producer's Showcase".
Information from Wikipedia:
In 1954, Fred Coe, production manager for NBC in New York, began producing Producers' Showcase, a 90-minute anthology series that aired every fourth Monday for three seasons. One aim of the series was to broadcast expensive color spectaculars to promote the new color television system developed by NBC's parent company RCA.
On March 7, 1955, NBC presented Peter Pan live as part of Producers' Showcase (with nearly all of the show's original cast) as the first full-length Broadway production on color TV. The show attracted a then-record audience of 65-million viewers, the highest ever up to that time for a single television program. Mary Martin and Cyril Ritchard had already won Tony Awards for their stage performances, and Martin won an Emmy Award for the television production. It was so well received that the musical was restaged live for television (again on Producers' Showcase) on January 9, 1956. Both of these broadcasts were produced live and in color, but only black-and-white kinescope recordings survive.