Jim Henson (Sesame Street first season)

During the production of Sesame Street first season, producers created five one-hour episodes to test the show's appeal to children and examine their comprehension of the material. Not intended for broadcast, they were presented to preschoolers in 60 homes throughout Philadelphia and in daycare centers in New York City in July 1969. The results were "generally very positive"; children learned from the shows, their appeal was high, and children's attention was sustained over the full hour.