Unlike most children's television programs at the time, the producers of Sesame Street decided against using a single host and cast a group of ethnically diverse, primarily African American actors/presenters,[2] with, as Sesame Street researcher Gerald S. Lesser put it, "a variety of distinctive and reliable personalities".
[6] Most of the cast and crew found jobs on Sesame Street through personal relationships with Stone and the other producers.
[6] The results of the test shows, which were never intended for broadcast and shown to preschoolers in 60 homes throughout Philadelphia and in day care centers in New York City in July 1969,[6] were "generally very positive".
The producers had followed the advice of child psychologists who were concerned that children would be confused, and had recommended that human actors and Muppets not be shown together.
In 2019, retired characters from the series such as Linda, Miles and Leela returned for the TV special Sesame Street's 50th Anniversary Celebration.